Lots of ideas to help and to choose from to find which helps you. All, including mine, are opinions that work for US so keep that in mind before I open my yap. This is just what works.......for ME, and the reasons I THINK it's a decent option.
First of all, WHILE NO ONE IS SLAMING SHORT DRAW LENGTHS, let me touch on that anyway.
If you're drawing 30 inches with a compound and drawing "to the corner of your mouth" with a trad bow, my half century plus of shooting with others tells me you're drawing 27.5-28.5 inches......unless you're over 6ft AND ALWAYS draw with your bow STRAIGHT to your left getting the furthest possible draw you possibly can.
I'm going to tell you right now some shooters here are going to flame me telling you that is how you're SUPPOSED TO do it and I'm going to call BS, not for HUNTING and not for EVERYONE.
People worry WAY too much about getting as much draw as they can. Find the draw length you can consistently hit at the widest amount of body angles and stay with it. Mine is 27 inches. It shrunk an inch when I got old. I almost missed that too over the years. That works great for me. Always has and I never once wished it was longer.
On going up in weight, I picked up a 100 dollar Black Hunter, two actually, but a second set of limbs is cheap and if/when done with a set you can sell them for about a 25 dollar loss.
I'm NOT familiar with ILF limbs personally but I'd be REALLY surprised if one can go through 2-3 different weight limbs for 50-75 bucks out of pocket, all said and done. Never know, you might end up STAYING with the Black Hunter, like I am. Mine's a longbow version. Big Jim sells a :"pretty version" of the recurve, if that's an issue for 40 bucks more.
FOR ME, going up in weight, 5lbs (or as close as the limbs come) I don't SHOOT the heavier pair for at least a month......but I PULL and HOLD them as much as my body tells me I can without making myself too SORE and it effecting my shooting the LIGHTER pair, negatively.
It SHOULD make your shooting the lighter pair BETTER so if you start getting WORSE, back off the heavy limbs, maybe even shooting for 3-4 days. Muscles get "torn down" somewhat so that they can build back better (no politics PLEASE! LOL)
My reasons were NOT that I was new to trad shooting. I've shot trad since the 60s but flirted with wheelies a couple times, (shot 4 deer out of 70 (ish) with longbows and recurves up to over 80 lbs......but I got old. Health went to pot. I didnt shoot AT ALL for about 8 years, then started to get back into hunting again. I was in for a shock!
I about herniated myself STRINGING my 70lb bow. I sold em all and went to 35lbs and probably should have started at 30. I was in BAD shape. Worse than I would admit. I learned and am hoping others learn from my screw up.
That said, 35lbs and I worked up to it.......slowly. I picked up a 50lb after a month and hurt myself so bad I had to stop shooting for almost a MONTH. Being old STINKS. Being old and bullheads is WORSE, LOL.
I did learn from that though and the next time I got the 40lber and started pulling and holding it, 3-5 times an hour or so before shooting the 35lb.
A week of doing that then I went to 3-5 times in the AM, again at lunch and again before bed, all the while shooting 10-20 WELL aimed arrows with the 35 during the day. I shoot to HUNT only. Whanging arrows for hours like I did when young is POINTLESS. Ten WELL aimed, ACCURATE shots a day will serve me for the rest of my life and are probably MORE than I "need" to be honest. I mean what's the most I'll shoot hunting in a day? Two or three, MAX? Most likely one unless I get REAL lucky and find some stupid deer, lol.
By the end of that month of doing that. I was up to shooting the 40lb half the 10 shots ALMOST as well as the 5 with the 35. I kept going up from there till I shoot all 10 with the 40lb, holding varying amounts of time, sometimes even letting up and starting over, shooting 10, very controlled shots, every day.
Anyway. This is what works for me. My 2 cents. My method of going forth and NOT putting craploads of money into it. Me? I don't like blowing money for no reason at all. Push comes to shove you could sell ALL the Black Hunter limbs AND the bow and not lose much. (PS.....if so , hit me up, I might want one of the sets LOL)
DO find out what your ACTUAL draw length is, with your trad bow though and do NOT let anyone tell you "that's not enough". If you hit your target and you hit that draw length comfortably and consistently........it's PERFECT.
"MORE" does not automatically mean its so much "BETTER" that it's MANDATORY. It's only better if it works........for YOU.
I've piles of dead deer from past decades that are still dead. Just making a point that short draws work just fine.
Flame me all you want gang. Three divorces = thick skin. #flameproof #noworries I need a laugh.
Be safe. Shoot straight
God Bless
Steven.