WOW man
MAD props!
EDIT:
Just saw you notes above about VAC pump.
If you are going for cheap
http://www.harborfreight.com/cpi/cta...emnumber=96677 is impossible to beat; you will need a big air compressor to run it; but if you are doing this , once per year you could borrow one . . . mine pegs my automotive HVAC A/C gauge every time.
I also own
http://www.harborfreight.com/cpi/cta...emnumber=66466
Works well also (I use if for My bio-diesel pickup tank). If you want you can take advantage of Harbor Freight tools lax return policy and "rent" one if you are careful not to scratch/ get it dirty.