I need your opinions on my gas tank relocation!

[gator2511]

I have my bucket seats ready to install in my 72K10 and when I'm in there I would like to move my gas tank to make more room behind the seats. The truck is used for daily driving (I'm retired) and hunting. Its a Fleetside shortbed so its not a work truck. I've seen some really nice work in putting tanks in between the frame rails in the back but I really don't want it to go there. I just don't care for having the tank that far back and so close to the rear bumper. I'm thinking about having a tank made to go up against the front of the inside bedwall. It would replace the box I already have in there. I could have a storage box built onto the top of the tank and use that space. The truck has a hard bed lid on it so it won't be an eyesore. I like the idea of the tank being in the center of the truck. Should I get a fuel cell or a regular tank built? What do you think of the location idea?