Spend some money on a decent cabinet. Scat blast are good for the money. The most important thing with a blast cabinet is GOOD lighting and a proper dust collector.
I just upgraded to this dust collector and it was money well spent. Ran the exhaust out of the building. It works about the same as their entry level collector but the difference in sound reduction is amazing.
Skat Blast® USA 180-DC INSIDER II HEPA Dust Collector
I also have a small bench top HF cabinet that I used mainly for glassbeading small stuff like bolts. Best upgrade was to add fine wire inside so small parts cant fall thorough.
So you have a 10 HP compressor...is it three phase? What's the cfm? My 7.5 HP can sandblast continuous all day and the compressor cycles with a good deal of time in between. I run my big cabinet around 100-120 psi and the small cabinet at 80-90. CFM is around 25 or 26 @ 175.
You really should not have a problem with air supply on a 10 hp compressor unless its a single stage.
I need to go get my monster cabinet so I can get it set up at my house. Its around 12' long, a real beast.
I have a pressure pot but I despise outside sandblasting. Its so damn messy and even when its cool outside you still sweat balls with all the PPE on.