Time,Tools and a Trailer.. its Party Time

Hello All, I’m new to posting, but I’ve been looking for awhile now. Each year I camp with a bunch of friends at a blue grass (get away from kids) weekend. They all have 1960’s small trailers. So with a 12 x 7 trailer sitting along side my building I though I might as well build something to sleep in. I had it sand blasted and welded up to improve the strength and fix some rust. Primed and painted and a support bolted down, with decking.
So now here I sit LOL .. It will be a sand up, it need to sleep 4, table seating 4 in the rear ( fold down to queen size bed ) and 2 bunk beds up front and I will be towing it with a v 8 Chevy PU. I have a spray-on bed liner business, all the high tech spray equipment so when all finished it will be wrapped 360 for white bed liner.
A family member was going to CAD plans and blue print them for me.. Looks like that might take a month or two. .. So has anyone ever just started drawing on the floor and cutting? This Friday I’m buying beer and pizza and where going to have ourselves and trailer raising party. (I’ve invited a lot of bored people and they have WAY more skills than I have. Pics to follow. ( I wonder what it will look like.)

So now here I sit LOL .. It will be a sand up, it need to sleep 4, table seating 4 in the rear ( fold down to queen size bed ) and 2 bunk beds up front and I will be towing it with a v 8 Chevy PU. I have a spray-on bed liner business, all the high tech spray equipment so when all finished it will be wrapped 360 for white bed liner.
A family member was going to CAD plans and blue print them for me.. Looks like that might take a month or two. .. So has anyone ever just started drawing on the floor and cutting? This Friday I’m buying beer and pizza and where going to have ourselves and trailer raising party. (I’ve invited a lot of bored people and they have WAY more skills than I have. Pics to follow. ( I wonder what it will look like.)