Typically, a barebow is a 25" Olympic recurve or barebow riser with medium limbs to make a 68" bow. Most start with a Shibuya DX plunger and a wire rest like the Spigarelli ZT. You can start with an X-Spot 12 oz weight for the stabilizer bushing. I originally bought one 8oz weight and two 5oz weights to play with different weight distribution on the riser.
It seems you have a recurve. What is you poundage? For indoor, outdoor target, field and 3-D, bow weights of about 34#-40# is common, which an average in the middle of that range. Shoot an arrow that tunes well for you.
Like all archery, form is important. If you are not used to shooting recurve, then start with 25#. If you have experience, then something in the range you are shooting is fine. If you are a hunter and shooting 40#+, then you could consider going down to have more control over your bow--you just need to poke a small hole in the target, not take it down.
If you are shooting barebow to compete, stringwalking is the best aiming method. You will need a three-under barebow tab. Yost, Black Mamba, Bicaster, Znipper, Fairweather, Bubba all make barebow tabs. Biscater have two models that are well regarded and reasonably priced. Yost is a popular tab. The other are also good, but can be expensive.
If you can tell us about your archery background in recurve and how you want to compete, that will allow us to give you better feedback.