@Vinny,
The issue of pressure is a result of your decision to use a drip system. This requires a multistage pump (such as MQ-3), if you are going to use a centrifugal pump. Using a positive displacement pump can be less expensive pump-wise but, unless the feed circuit is properly engineered you will have regular pump burnout. Either way the costs can be a wash.
A drip system also determines your watering plan, which can also affect the yield.
The MQ pump could work as it has the ability to self-prime up to a 26’ depth. On the other hand it also has a PPO (Polyphenylene Oxides) impeller which will interact with your nutrients affecting yield and possibly passing testing.
Having made my living engineering commercial-scale nutrient delivery systems and pulling out a number of these “simple drip systems”, I can tell you from first hand experience they are anything but simple and rarely work well (considering time and cost to experiment and resulting low yield).
Once you accept that and give me a budget I can give you further assistance. Again, this is your business we are talking about and success or failure can easily be determined by how you proceed on this issue.
If you are tight on budget, then perhaps you should consider getting one or two rooms going to start with by installing a properly engineered (expensive, if you will) system then build out the others using that pattern as profits allow.
That’s is the straightest answer that can be given. What you need to figure out, imo, is what is really expensive to you in relation to having a successful business.