Looking very good.
Re: boats, I'd copy the boats from the pic Monty posted. Ones drawn for other dreadnoughts and from the RN boats sheet should fit. See my Courageous or Hood 1920 and Jabba's dreadnoughts for examples.
The RN boats sheet is on the parts forum somewhere...
I've a request in to Bezo to use his boats, i.e.:
They are very nce so why reinvent the wheel
I've already included them an am awaiting his
imprimatur