I have a question: Why are you installing A/C power distribution on your boat?
My 23PH came with 110VAC distribution, and I never use it. I have a 50watt solar panel which keeps up the batteries during periods of non use. I don't have room for a microwave or electric stove. I have my boat set up to operate away from the dock so everything is based on my 12VDC system. If you need hot water, you can install a 12VDC element in a standard tank, or man up for a real "marine" model. So it seems that all the nice amenities available from 110VAC would only be useful for me when tied up to a marina.
I once had a boat that I kept on it's trailer at my house. For convenience, I install one of those female 110VAC plugs in a storage area away from the weather and installed a Genius battery charger. That made it easy to plug in when I returned home. Plus, I'd have an unlimited supply of 12VDC when plugged in.
If you need 110VAC on the go, many folks have opted for one of those compact generators. I have one of those, and never take it along. A cruising friend uses one to heat water in his 6 gallon 110VAC water heater. When we are all anchored out we know when he is getting ready for his shower
At this point, I would consider a good heavy duty battery, say a group 31 AGM, and a solar panel. Outboard motors also provide some charging capacity.
When I lived up North and left the boat in the water in the winter, we used to run a cord onto the boat to power a light bulb which helped to keep the inside dry, but I think a lot of marinas nowadays frown on leaving boats unattended with electrical devices like heaters operating.
But on the other hand, if she is going to be a dock queen, then I'd go for 50amp service. Enough to power the A/C, ice maker, fridge, flat screen TV, microwave for popcorn, and of course party lights.
Not trying to dissuade you, just offering another perspective. Isn't it great how we can make these boats our own?