Hi
If you do Mercia at Willington- you could also see BWML at Sawley. Get one of the canal mags- there's loads of adverts at the back and it'll introduce you to a number of brokers.Look at lots of boats- and dont believe what you see on the internet will be what you find- we found 2 beautiful boats on the internet- went to have a look and they were frightening- neglected, dirty, lack of maintenance etc and one I discounted from a broker on the internet was the one we bought (nicer when we saw it)
Shardlow have residential moorings- not sure if there's any spare- It's close to M1 / M42 so within your timing to Birmingham if you dont get anywhere closer. Mercia at Willington, Barton Marina and Streethay at Lichfield are marinas my side of Birmingham. Shardlow have a residential mobile home park around the marina- would that be any use to your grandparents- they have the odd mobile home for sale?
0ur boat is 37foot- used for weekends and the odd week away-fixed bed at the back etc- I dont think a couple could live on it- but my OH says he could. The shorter length is great though as its a cheaper licence, mooring, painting, easier turning around etc and we thought it would be good to start with a smaller first time boat. Our budget was similar to yours and even with the boat, marina and a paint job- we're within the initial budget- so it is do-able. We bought ours last year so the experience is still fresh- and this site is great for advice (although it will differ)
You'll get to a point where you look so much, you cant take anymore- but you will find the right boat.
Have fun and good luck
Jackie