Shame you weren't closer we have the ideal place up here in Scotland - we lost our blind boy last year at the grand old age of 21 and in his last 10 months with us, moved house with his 36 siblings (mostly ferals but others with issues and not for the feinthearted including, diabetic, no tails, 3 legged and cardiomyopathy and ferals who are not for the feint hearted including our colony as noone could feed them!)
Bert mastered stairs, and 5 acres and loved to wander round the garden and put up a merry chase session if he wasn't ready to come in!
Good luck with the boys both have Scottish names to, we live very rurally and a mile and a half up a single dirt track with no major traffic in fact the other track users stop and wait for the cats to move!