I have a 12' Valco similar to the boat in your photo. My boat is a 1974 model and my parents paid about $500.00 for it and a sweetheart of a Johnson 6hp of about the same vintage, back in 1996. They paid another $200.00 for a trailer intended for a 16' Tahiti low profile bubbledeck speed boat. My late uncle was a welder by trade and he modded the trailer to fit the Valco. Here locally (northeastern Oklahoma), I see boats like mine for sale for $250.00 or less and they simply don't "move." It seems that folks around here would rather go into debt at Bass Pro for a Tracker with carpet, bling-bling graphics, trolling motor, fish finder, bigger motor, etc. than "settle" for a basic little aluminum skiff. Those that might settle for something basic are also inclined to spend their cash at Bass Pro where they can catch a sale on a 12' riveted jon that they'd deem to be the functional equivalent of my boat.
I've had a few boats over the years but my favorite was a 13' Boston Whaler Super Sport. It had two wooden thwart seats, a small bow platform with storage locker to forward, a wooden seatback / storage locker behind the rear thwart seat, and a small wooden steering console. I liked that boat because it was basic and simple, yet versitile. I could fish two people comfortably with it, or cruise with four adults comfortably. It fit in a standard two-car garage, but I took it across 26 miles of open ocean to Catalina Island regularly. I want to set my Valco up as the "tin can" version of the Whaler I had, duplicating the interior layout as much as possible. I need to re-do my wooden seat tops, anyhow, so adding in the rest of the mods won't be that huge a deal.
I wouldn't cut the middle thwart out of my boat because it is obviously a sturctural member and I think it is the same with yours. It isn't that big a deal to step over the thing if I need to, and keeping it gives me a place to seat people when out cruising around. I think it adds to the utility of what is suppsoed to be a utility vessel, so I'd want to keep it even if I could ditch it.
Yours looks like a cool ittle boat. I hope you enjoy it, and enjoy setting it up exactly how you want it.
T-C