I've done quite a bit of night hunting. Got one or more caracal, serval, porcupine, civet, genet, honey badger, grysbok and likely a few others (bush pigs, maybe a dozen jackal . . .) that way. My tips?
1. Practice shooting quickly once you see the target. You won't have much time once the spotlight lights up the the animal.
2. Get used to shooting where you think the body is. In Africa you may see the eyes lit up and not much else if the grass is high (as it usually is). You have to quickly try to figure out where the body sits. This was tough for me, since I don't like shooting at something I can't quite see (violates one of the cardinal safety rules of shooting). This is obviously easier if you're shooting from a blind and the entire animal is lit up at a bait - but again, most of them won't sit there for long once the light comes on.
3. Use a scope with an illuminated reticle if you can. I use a Swarovski Z6i, with the illumination turned down low. Trying to see black crosshairs on a dark body and shadows can be difficult. The illumination makes sure you don't waste time trying to figure out where the bullet is going to go. In other words, it speeds up target acquisition.
4. I don't think scope power makes much difference, but since you likely won't be shooting at hundreds of yards, you could use something with lower power. On the other hand, field of view won't help you much - outside of the area illuminated by the light, you won't see anything (and that area will be less than the field of view on even a powerful scope).
5. If you want to do full mounts, either go for a small caliber or large. My plains game rifle - a .300 Win Mag - can blow the little guys apart, especially if you hit bone, like a shoulder. I tend to go bigger - I prefer something like a .375 with solids if you can get them.
5. Make sure your PH has experience with these animals. He will have very little time to judge them and tell you to shoot. My South African PH has never steered me wrong on a whole bunch of these hunts, but I've heard different stories from others.
I hope this helps. Have a great time - this is exceptionally fun hunting, and chasing these little guys is a heck of a challenge. In fact, writing this makes me quite jealous!