Some of the lots are way too narrow for 270k.
Can't pay that kind of cash to be earing your neighbors fart.
Surf sports will destroy your shoreline in no time on a 220' wide 10' deep lake.
10 minutes of surfing and then waiting don't know how long before going back.Nope.
Anybody driving is an accident waiting to happen on such a small lake.
Make it only one ski lake,bigger and less lots,a course,find some real die hards skiers,club boat,some touneys and maybe it will work.
Good luck!