You just need to find out how many amps are available to you? looking at it looks like it could be a 100 or 200amp feed to the meter for your suite.
These days I assume that anybody kitting out a warehouse grow, no matter what size, wants to or has intentions of one day being licensed or at least legally compliant where ever they are at. That is why I lean real heavy on doing everything above board, to code, and safe. Basement or barn grows are a different story, I can show you how to do those down and dirty but still safe.