By way of introduction, I am a delivery skipper with nearly 500,000 miles logged as well as an educator of sailors wanting to head offshore. So I think my advice has some credence.
Reading some of the excellent replies you’ve received and your plans, ie three crew aboard, I would say you’re on the right track. However…monitor Predict Wind; you’re not going find the doldrums due east. The Horse Latitudes lie along 25* N generally. For the trip form the east coast—which I have sailed more times than I can remember—your waypoint should be 25*N x 65*W. That will set you up for a nice reach across often boisterous trade winds that blow from NE to SE.
Do not go outside Cape Hatteras. Even on much larger boats, with professional crew, I will usually take the ICW to Beaufort, NC and wait for a weather window there. For you, that might be a week or two. Be patient, nothing gets sailors into trouble like a schedule.
You can continue south in the ICW or shortish offshore jumps until you get to Florida and leave from there, you just have to wait for a cold front to approach and leave when the wind turns SW. that should get you across the Stream before it goes east. But don’t get south of 25*N until you get to 65*W, even if it means tacking.
Don’t overestimate how fast you’ll go. I would estimate 100 mile days on an IP32, often less. You may be able to regularly do 6 knots, but you’ll be very lucky to average that over 24hours.
Precook meals so you can just heat them up as needed.
Start taking seasick meds at least three days before departure and keep taking them. You may have never got seasick before but why take a chance…and take it from me, it’s a miserable experience!
Have your engine and refrigeration serviced before you go and make sure you have the recommended spares. Change engine belts and impeller and fuel filters. Make sure you have adequate tools aboard.
Make your bunks as comfy as possible; sheets and blankets no sleeping bags.
Read my “advice to an offshore first timer” in Cruising World. You’ll find many good articles on the subject there, including more from me, but look for Don Street’s, too.
Start studying the weather and learn how to use weather maps. Watch for patterns in the winds so you can figure out weather windows when the time comes.