Keel guards make it very hard to maneuver on the beach, when I was doing Ski rentals I put a pair on my ski's the 1st time I went to beach it I flew over the handle bars when the ski came to an immediate stop on the sand.
Just do a bottom jobs every few years and you should be okay, I did a bottom job at the end of every season with my rentals boats, my rec sailors are in the 2-3 year range.
The new cross bars are nice, what condition is the rest of your boat in, would hate to see new bars on soft hulls, and blown out sails.