RE: 4* question
Yeah it should work... That is as long as the 4* servo tray allows
you to put it in the same way as your Alpha..
You know Cobra78 is right on, on getting a computer radio.. If
money is not the issue.. I would stick with the same brand if you
could so as to buddy box with your present radio just in case
friends or family would want to give the hobby a try.. That way
you could train them:-)