I made some similar mods to yours. No dodger since that is precious space, which is where the anchor and scuba tanks go. I changed out my original wooden paddle for two plastic resin ones with aluminum handles. Had to build mounts for the oars but did so inside the boat out of the way. No rowing just paddling and hopefully never. I built my own wheel launching setup, but didn't even consider not have them store on the transom when in the water. I use a chartplotter too, but put mine into an electronics tower with my VHF, and battery. It slides into a mount on the floor.
Funny how similar some of our mods are