Shouldn't be a problem
According to the Capri 22 specifications, the difference in the J measurement (height of main) is 2' (26' vs. 28'). The length of the foot of the main is the same (E=9.75'). See attached link.I wouldn't raise the boom too much in SF Bay since, by doing so, you'll be raising your center of effort, increasing your tendancy to heel, thereby defeating your purpose.Assuming that you have reef points in your tall rig main, you may find that sailing with a reef would approximate the size of the standard main. Even if it's a little smaller, it would be OK. You'd be sacrificing optimum sail shape, but you might want to try that first before investing in another sail.I have a standard-rig Catalina 30 and find that I need to reef more often than not when sailing the "Slot" in SF Bay, which gets the brunt of the wind coming through the Golden Gate.By the way, the current issue of Latitude 38 has a great article on sailing SF Bay.