Ah, sorry I got your post wrong. To clarify, RTRVII is totally different to RTR8. The mods belong to the same family but they are essentially their own gigs with their own approaches to realism.
So installing RTRVII won't give you everything, because every RTR mod (be it 6, VII, 8 or the ones before 6 as well as their respective submods) speaks for itself and has its own approach and style.
I suggest trying them all out.
Cheers!