mornin` al!
like mike says you can do it with torsion boxes-n-clamps.....but why?
if you don`t have a large enough bag cost out what building torsion boxes would run vs buying a cheap vinyl bag...i`ll bet the bag will be cheaper and i know that it`d last for more than one glue-up.
avoid contact cement for all wood veneers....even paperbacked, if you use solvent based finishes you stand a chance of weakening the glue bond and getting bubbles.
from your post i gather that you have a vacuum pump?
here`s a 2`x4` from joe woodworker for 100$
http://www.veneersupplies.com/produ...=2708&osCsid=7b358b19ba872920debf443825a7ba76
and on the clearance rack at qualityvak there`s a 13"x60" vinyl for 20$
http://www.qualityvak.com/clearance.html
as for glue....i use plain ol` yellow glue for 95% of my stuff....but if you want more open time urea glue is good. dap/unibond/ or an industrial glue such as DR from national casein.
seaming and flattening are going to be the biggest hurdles for the first time veneer`er.......so do a practice run without glue before you do your glue-up..