1/2a stunt pattern flying, what a great subject! My best 1/2a pattern birds all have several things in common. Light, plenty of power, good fuel feed and easy on the controls. My suggestion for your first would be something similar to the 1/2 lite , Phil's wings, maybe a built up fuse and tailfeathers , Norvell .061 , balloon tank supported by a Sig Canopy. I would make a half dozen or so balloon tanks at one time so you have plenty ready to go, they work just like a hard tank as far as up and down for rich or lean. If you fly off grass I would put the controls on top of the wing. If you opt for a full fuse you will need to find a hard tank that works well with your engine and keep it close to the engine, or make it easy to get to the balloon tank, maybe use magnets for your tank cover hold downs. Maybe start with 42 foot lines, I like the 30lb. braided stuff. Also if you keep the controls slow I am fine without flaps on a 1/2a. Good luck, 1/2a's are the bomb!