RONH,
Many opinions here, all good. I have a similar outfit for sandblasting that NJCJOE does and it works fantastic, but I got tired of changing out the sand and putting in the glass beads when I needed them. Not hard but time consuming. Most sandblasters around me that have commercial outfits charge $1 per minute....sounds like alot, but a good setup will do amazing things quick. I can do an entire farm tractor in less than an hour with a commercial blaster. I have a larger stand alone blaster as well and can't do a whole tractor near as fast as a commercial outfit can so I let mine sit and use the commercial guys for the big stuff. Also, the $1 an hour around here is sandblasting, bead blasting is considered a "specialty". Like NORTON mentioned though, any larger blaster is going to warp a car something terrible if the person running the blaster isn't extremely careful. I watched a gentleman once who literally ruined a 69 Camaro by warping the heck out of it.
Most all the things I beadblast are small, so I went out to Harbor Freight, purchased a $100 cabinet, along with a compressor that isn't big enough to run the beadblaster full time, but it gets the job done quick enough. Would probably take me 10-12 minutes to blast a car at most...and about 25-35% of that time is waiting for the compressor to build back up, gives me time to inspect what I've done though, and for the metal to cool down a bit and I have never had to worry a bit about warping. I know a lot of folks knock the Harbor Freight tools, for smaller stuff it's worked fantastic for me for a lot of years. In fact I just updated to a slightly larger bead cabinet and newer compressor, didn't need to but I had use for another cabinet & air source. HF has updated at least this one blast cabinet so they don't leak near as bad anymore, and get the right compressor with cast iron sleeves, treat it right and keep it well maintained and it should last a very long time.
Bought a new 5 gallon pail of glass beads from Fastenal, and been using the same beads for 5 years now. If you do buy a cheap blast cabinet from somewhere like Harbor Freight, just take the time before you put it into use to use a tube of silicone caulk and caulk each and every area you think may leak. And whatever compressor you get, should you decide to go that way, break it in properly according to the instructions, that's quite important.
Lastly, a little tip, if you get your own outfit, whatever it is, soak your parts in vinegar a day or so beforehand, half the paint at least will be gone before you even start. My process, soak in vinegar overnight, rinse exceptionally well with water, dry thoroughly, then beadblast, start painting as soon as possible out of the cabinet. Hope some of this helps ...