I lived where you're considering moving to.
I can't comment on questions 1,2 and 3. However, I lived in the community you're considering for 9 years after living in a series of houses with acreage and I loved it - best move we've ever made, except maybe for the move to a CCRC last year. This is just my experience, but I unquestioningly and willingly spent way too much time doing house and yard maintenance at those acreage houses. I didn't realize it until we moved. Perhaps we were fortunate but at the 55+ community we had great neighbors and a built-in community with very friendly people and a great variety of clubs / activities in which to participate. I joined a walking/hiking group, started riding my bike again, section hiked the Pacific Crest Trail in WA in 5 years, joined some committees and generally had a much more rewarding social life. I found that living closer to neighbors to be very pleasant. The reason(s) we moved to a CCRC is my wife is 82 (I'm a bit younger) and she was starting to reduce her gardening activities and increase her physical ailments. We moved to the CCRC in Issaquah, WA and it is also a very nice, but different type of living arrangement. The buy-in and rent are quite expensive, but it is a form of long-term care insurance, and you have to be healthy when you move in, or you can't take advantage of the health benefits for x additional years.