Gotta decide if you want a soildly mounted mount which will require removing the rear sight and drilling & tapping the topstrap or a on/off clamp on style first. I prefer a good solid mount and use Leupold mounts on my BH's if they get scoped. I like the redfield rings too for them.
For a scope...inexpensive get's you just that, a low cost scope which usually will equate will lower quality too. You don't need to spend $00_ but expect over $100 easily. While I prefer Burris I have had great luck with a Bauch & Lomb (now Bushnell Elite). Has withstood some good heavy .41 mag loads. The cheap stuff may not hold up to recoil.