Hmmm, some type of LPVO seems to be what you are looking for.
I can only recommend the following as that is really all I have first hand experience with.
Steiner PX4, I have this mounted on sort of a multi-purpose AR and really like it.
Primary Arms Plx 1-8 with Griffin/mill reticle, this is on a 16" Aero M5 308 gun, sort of my version of a modern "battle rifle". Love it!
Vortex 1-10, this one is owned by a friend that I mounted it for him, it is awesome but expensive.
I realize all those options I mentioned are used on AR based guns, but the idea of using a LPVO on an AK74 is solid choice anyway.
The MI mount is a solid choice and so is the RS regulate mounts for AK siderail mounting.
In the end, picking out the right optic for you, is going to boil down to how much you want to spend and how much magnification you want.
Hell, one of the fixed power prism optics may work well for you as well.