Twin or bilge keels are primarily an advantage in areas with very large tidal changes and large areas of water
that go dry or get thin. The British Isles qualify.
the boat takes the ground and sits upright rather than laying over on its side when the tide goes out. The problem is not the boat laying over but coming to rest in a position where it won't flood when the tide comes back in.
If you are going to sail the boat off a mooring
you will want to consider the tidal range, depth
and exposure to wind and current
If the boat will sailed out of a marina that doesn't go dry or shallow there may not be a reason to get a twin/bilge keel boat.
A house is but a boat so poorly built and so firmly run aground you would never try to refloat it.