Welcome to the delights of the E34, I'm sure you'll enjoy your experience
Looks like a good buy, those rims do look good (Do a search for Mr Project and look at his sig pic same rims, same exterior colour just in touring flavour)
I didn't realize the silver gray interior was difficult to obtain. Was it not a popular option in the states?
Tip on the suspension items, get the Lemforder parts as they are a superior quality to the Meyle items, this is just from reading posts on this board.
Please do keep us updated with pics on your progress.
Cheers and have fun!