Daniel...absolutely...I was just trying to be specific about what it costs as minimums to hang out in the Abacos.
I think your numbers for your sized boat are pretty realistic for longer term cruising in a "decent" style. The only thing I would suggest is to budget for maintenance separately from everything else and "bank" it. My experience is that you can easily get lulled into a false sense of security, spending very little some years....and then get blasted in a subsequent year...so it is helpful to establish a "fund" so it doesn't feel so bad when the chickens come home to roost!
Much less concern on this if you're only going for a year and especially with a new boat like yours, but thought I'd mention that for others.
I second your desire to see the ICW hot spots. We were simply in awe of all that we were able to see and do during our first trip...beauty, history, out of the way gems of towns, wonderful small cities. It is WELL worth the trip ONCE especially if you can take your time and not have to push for 50-70 miles a day. Allow 45 days from Norfolk and you will have time to enjoy it all and not feel exhausted by the time you get to FL.