Im not going to bleed it with the M/C still attached unless I can get my hands on a vaccume bleeder. Sound good?

I need a vice anyways and one can be found for like $25 new.
Once I do the bench bleed, will I have to bleed them again normally once the M/C is installed once again, since air might find its way in when I re-attach the M/C to my brake lines? Or will that not be a problem at all? What about my rear-brakes, since I only removed the fronts?
S/CBlack95GT The ABS system, how do I check if I have air in there and how do I remove it?!
Ill deffently get that fluid you reccomended bimmer.
RIO how does that mini bleeder work for you? Think that might do the trick for me, hows it release the air out of the gun that came from the lines?
Thanks for all your guys input. Your helping me out a lot!