Items installed at the factory are often very expensive--and as you noted probably because they disrupt the production schedule. For example hatches are very easy to install: Cost $200 to $300. Also I have often placed one facing foreward and one facing aft--so that you can use the hatch lid as a sort of a scope--even when underway, leaving the aft facing hatch open. Also position the hatches so that a "windscoop" can be utalized to increase the draft thru the boat.
Red dot--and a number of other "cab" heaters make the engine waste heat --heaters. They are good only when the main engine is running.
There are some which quiet. Cost $85 for 25,000 BTU 3 speed--uses standard 5/8" heater hose.
Another option is one of the small diesel heaters such as by Dickson for about $500, instead of the ESPAR (which I wouldn't recommend for this type of boat anyway).
I doubt if the "super quiet" system would be worth the $$. Also I would really watch the weight, especially items like the WD--30 gallons a load takes a lot of water--especially with a 12 volt water maker. Certainly if you are going to spend a lot of time at marinas in Florida, Airconditioning is necessary---the green house effect would be quite evident.
The 3 burner stove would certainly be a good option. The combo convection/micro (we have two--one at home and one in our RV)--is better than just a microwave, but Marie does not like them as well as a standard over--and they use a fair amount of power--especially without a generater.
I suspect I would want the extra table removable--It is nice to have a "chart table"--or to build in RAM computer mount--either at the helm station or by the Settee. I would do my "own" entertainment system. Things are changing so fast--and there are some great bargins in the LCD TV/even in combo computer screens.
Sounds exciting.
Bob Austin