If you can get the trip done sooner than later with some of the longer days still around, you should be able to get down here in a long two day weekend, also assuming you can catch the tides vs going against.
A 32' boat should cruise closer to 6 knots and still get decent fuel useage. My 29.5 OA 24.5 LWL does 5.8-6 easy, I can wide open throttle and do 6.6, but fuel useage doubles to something over 1 gal an hr vs .5-.7 gals and hr. Not sure what Davids old Cat 30 did, but would assume equal.
She drives me boat,
I drives me dinghy!