You don’t need to change away from the 265. It is more than enough. Also, you can get - 1,5 negative camber just by using the available adjustment in the oval holes of the front top mount. We’re tracking one with these numbers and it is like a go cart on rails. Seems like all you need to start with is help with a good alignment. Then, if you want to move on from there, contact Tarett Engineering or a simular business that specializes in chassis parts and set up. Too many cooks out there guesstimating etc., and too important of an issue to listen to a non professional. After all, you’re talking about the handling of a car at high speed ? That’s my two cents.