I have an 87 Pearson 31-2. Great boat, handles very well under sail. Easy access to most systems. My concerns as a liveaboard/cruiser primarily are around tankage. 18 gal fuel, 40 gal H2O, 25 gal holding. If you are going to hit a marina every few days, stay in a slip or can be very frugal with your water usage, great for 1 or 2 people. If you were thinking anchor, or mooring buoy, I'd think about alternatives with greater tankage.
S/V Anything Goes
1987 Pearson 31-2