I'm going to be pretty honest here.
There is a working aimbot out for 5065, the point is you have to find it(no, this is not easy).
However, the people capable of creating proxies that work on any real server see it as more of a waste of time than anything else, the real goal is to get TQ(which is what 5bot does, steals money from their own project(sv)).
Anyway, you could find one, though I'm not even sure where anymore.
I'd wish you good luck but I don't mean it, you shouldn't use cheats on a private server >.<
-Andy