Dont worry about the MVB so much, its Mercury Vapor Bulb, gives UVB and Heat, but you already got your UVB. So a halogen spotlight, just like ones sold in hardware stores would do great in that kind of space. I found the MVB to be a bit picky when trying to manage temperatures and adequate UV levels but thats just me..
CHE stands for Ceramic Heat Emmiter, no light is given off, just radiant heat. You could use these if you find that your home gets too cold at night, just to keep temperatures at a good level. During the day it'll probably be best if you just use lights though as he will welcome the added brightness to his home. With Larger tanks you will also be able to make multiple basking sites at different temps and levels so that is going to work awesome for you and your friend.
UVI is Ultraviolet Index, just a measure of strength of UV... not necesarily UVB though just UV in general.
These are just my thoughts and you're up for a fun time... kinda... haha, but just make sure you take everything in that you are given and sort through the baloney yourself, just gotta do some research.