Go for it!
I sailed my 88 Catalina 30 to Bermuda to liveaboard her. I replaced all the standing rigging, replaced the forward hatch glazing (it was cracked) with Lexan, installed a tie on the lowermost campanionway slotboard (put them all in when it got really rough), replaced cockpit scupper hoses, installed a CARD unit, installed a dodger, was obsessive about watching the weather (I hired the gulfstream Lady, best $180 I ever spent), carried a liferaft and EPIRB, pumped out and cleaned my fuel tank, carried spare fuel filters and a baja filter, stowed fuel jugs securely over the keel instead of on deck, and generally went over the boat as completely as I had time and skill. Some things I didn't do but would advise: putting a very positive closure on the lazarettes, move the anchor and chain to the center of the boat down as low as possible, make sure everything works well. I thought I had but by the time I got here the only thing that worked was the sailboat, no engine, no electrics. Fortunately I carried a hand held VHF and had a spare handheld GPS. Another friend of mine soloed his Catalina 30 to Bermuda and spent 8 seasick hours in the Gulfstream down below sewing his main which ripped from luff to leach in a gale. Carry a spare of some sort. The biggest mistake I made ( though in my case unavoidable) was heading offshore before I really knew the boat inside and out. know how to fix it, and if you don't, carry a spare. Just a point of interest, I helped moor a 70' maxi last night that lost its mast launching off a 40' wave on the way over. Over driven? probably, lesson.... relax, don't push the boat. Scary? definitely. Offshore is offshore whether its 900miles of open ocean or 200. Don't take anything for granted.Go for it!