The KA-50 problem is mastering the flight controls. Flying the damn thing is much more difficult than operating all navigation and weapons systems.
My advice is, read the bare minimum of the manual so you know how to start up and take off. Than practice flying, trimming, level turns, combat turns, start hover, avoid vortex ring state, avoid over speed/rotor destruction, landings, etc...
After you feel confident in your flying skills, than learn how to blow up stuff.