Calling all Widget experts...

Here are some of my beginning ideas for a possible Widget build. I appologize if they have been brought up already. I have searched and have not found much info.
4x8 HF 1800 lbs trailer. I am planning to not chop it up rather, just alter the shape of the two bottom corners of the Widget profile to meet the 8ft length of the HF trailer. Does anybody see any problems with this?
3/8" ply for the walls. No interior skin.
1/4" Luan for roof. No interior skin on ceiling.
3/4" ply for floor. (Is this overkill?)
Typical resin coating for water proofing and fiber glass to reinforce joints.
Do these ideas seem adequate? Any recs?
Thanks everyone.
4x8 HF 1800 lbs trailer. I am planning to not chop it up rather, just alter the shape of the two bottom corners of the Widget profile to meet the 8ft length of the HF trailer. Does anybody see any problems with this?
3/8" ply for the walls. No interior skin.
1/4" Luan for roof. No interior skin on ceiling.
3/4" ply for floor. (Is this overkill?)
Typical resin coating for water proofing and fiber glass to reinforce joints.
Do these ideas seem adequate? Any recs?
Thanks everyone.