Hi Mike , Id just go for it . Your probably going to sick to the ICW for most of the trip, I imagine . So if your not set on buying parts and pieces in CT , I would just say heck with it and go . There are plenty of places to pick up what your going to need as you head down the ditch .
Besides until you start moving the boat its unlikely that youll find out what she needs . IMHO and experience boats never break at the dock its allways when your underway . Thats when the gremlins wake up . Its probably the best way to give the boat a good shakedown before you jump outside and give her some blue water.
So if thats your plan (ICW till your happy with the boat) I say go for it .
BTW Tartan will most likely be my next cruiser although I have never owned one the reputation preceeds itself . Great choice . Have fun with your new toy and get a Tow boat deal from one of the big outfits before you head out.
best of luck with it
Its hard trying to nap with that bilge pump alarm going off all the time