What could go wrong if.....?
If all the heavy stuff ended up on one side of the trailer? Or if all the heavy stuff was near the back bumper?
Even Airstream itself has designed a few trailers that were inherently unstable due to poor weight distribution. A search of "front kitchen 33 foot" could be very educational. Your post suggests that this is your first trailer... and a big total rebuild at that. Do a LOT of reading, thinking and learning before you make any decisions. Meet with others who have DONE 2 or 3 rebuilds to avoid having to "fix it twice".
Remember it is a (1) Small (2) Vintage (3).Trailer! Not a house! A tiny bathroom is irritating, but you only spend a few minutes there. A bed that is too narrow will irritate you for 7 to 8 hours every day. Wrap your head around ALL of the tradeoffs you will need to make to have a SMALL trailer.
It is generally simpler and safer to replicate the original layout when possible. Changes can be done, but professional advice and help may be appropriate!
Today is a gift, that's why they call it the present.