Not trying to deter or anything, but have you had any experiences training older people?
The only reason I ask is, squatting/deadlifting are good exercises, but not easy exercises to get great form on and especially if they have not done them much or ever. Also, as one ages, they can get harder to use and recover from. Knees, low back and shoulders especially need some special attention for some.
I am not saying at all he cannot do them, but I would get checked out by a doc or PT, get some mobility ideas as to what he can and can't do and start real slow. Using BW exercises at least on some of the big stuff, might be a start really.
I think it's great he wants to start a program, but you want him to get fit and in better shape from it, not hindered.