I know one thing, I would completely deck between forward bench and existing deck, using the open area to put extra braces and a hatch for large storage area - that way you have a great dance-floor up front for casting and a place for the doggo to roam.
This looks like it will take a ton of work, but will be an absolutely crick & flat water machine.
I don’t think it’s considered a tunnel boat. It’s called a well boat. It’s a shrimping net style work boat. Built like that so you can back down on your nets and not get them tangled in the prop.
100% agree to deck over between the forward deck and existing forward bench. Thinking about deck over the same in the back as well but that will be tricky when the motor is tilted. Yes. Lots of work to do but I’ll try to make it fun. Would it make a difference to foam fill the voids in the bench’s?? Does that help flotation? We can get a little heavy with the whole family especially if we go camping.
I am thinking a mini center or side console with room for the wheel, switches, binnacle and gps. Polling platform. Cooler seat. Keep it low and light.