Welcome to the forum... if you getting a 91, then you may want to read some info from other posters in the RR section. Don't get me wrong... Rovers are a welcome family member, but the older vehicles can be harder to find parts for as well as knowledgeable people who know how to fix them.
Wish you all the best... one day I plan to buy an older Rover, but I have to find a new house first.