bong mechanics

Me and a friend of mine are planning on making a gigantic bong that (we hope) will be able to cash a gram or so in one hit. I drew it all out awhile ago and im just waiting for a noneventful weekend to start making it. The only problem it seems to have is that fact that it's humanly impossible to suck hard enough to clear something as large and intricate as I plan on building.

Once everything is cashed, would it be possible to remove the bowl and put a shop vac (turned onto blow) on the other side so that it forced the smoke out the other side?

Or perhaps I would just need a very large carb and a small mouth hole? (gradually decreasing volume in a system increases the pressure and speed of water, would it work with smoke?)

you could go for a gravity bong type thing where you don't even suck it until it is already full

Thats the method I planned on using to get the smoke into the bong, then i would detach the jug I used. The only reason I dont want to make a straight up gravity bong is because it isnt filtered in any way. I was hoping to triple or even quadruple filter the smoke.