Thanks for the replies, to answer a few questions.
I have actually gone through a few blasters on this project before settling on one.
Initially, I started the project with a small handheld blaster called a from Eastwood called a Speed Blaster. This was more or less my way of qualifying that I could do the work before moving into a larger blaster. For the price, the handheld blaster was nice, and great for small jobs but not great for things under the car as the nozzle needs to be pointed at a downward direction to work.
The vast majority of this project has been done with an East Wood 50Lbs pressurized sand blaster. Most of the blasters are made by the same company but just have a different name on them, but at the time East Wood had a great sell going on so I ended up with them. The blaster has been good, but has had it's share of issues and seems to go through nozzles fairly quickly is my only major complaint.
With sand, I initially started with East Wood's 40/70 fine sand/glass. I had great results but don't but it...it is way over priced and you can generally find something locally for way cheaper. I also tried ordering some sand from Home Depot site called Black bull which was to way to fine. Black Diamond (Fine) is what I ended up using, which I was able to get locally for around $6.00 a bag. If you can find it, it is great, and does not kick up as much dust as the East Wood brand and is only $6.00 a bag vs $30.00 + shipping.
The only other suggestions I would make for anyone attempting this is to get a strainer so that you can clean and reuse sand and obviously by aware that it gets everywhere...I ruined my garage door opener on this project...but it was worth it