Hello NEBrian,
I live at the other end of rt 2 in NH. Pick the boat in your price range with the accomodations you need. Be sure price range includes costs for repairs and upgrade additions for bluewater, long range cruising; such as new safety equipment, updated standing rigging, spare parts, storm jib, extra reef points, if needed, in main. There's a long list of common sense equipment and mods that any boat owner intent on bluewater sailing should have. Beneteaus, as a brand, are up to the task, when properly outfitted with a captain who knows his boat and is well prepared.
I am not a Beneteau owner, but I have lived aboard, sailed long range and across an ocean. I do know Beneteaus are designed solidly and to sail bluewater, survive knockdowns and be self-righting. That's a good start for any bluewater venture.
If buying used, be sure the PO hasn't changed or adversely modified the vessel to not meet the above standards, which are not comprehensive by any means.
I also recommend that when sailing outside immediate availability for help, keep the main hatch closed. There is the unpredictable rogue wave or blast of wind. I was sitting below, aboard a 56' three-masted schooner, reading a book at the dock, on a nice Florida Winter day when the boat took a very sudden 20 degree heel and popped back upright. Talking to people at the marina afterward, they described the row of sailboats as looking like a line of dominos, they just suddenly fell over in turn down the row. Nobody else felt any wind or saw the Kraken brushing the keels. You never know.
-Will (Dragonfly)