Congrats on the setup! Since you asked what we all think, i will solicit my opinion that is based on my own experiences.

The biggest mistake i made when getting into mining was that i did not prepare myself to scale. I started off with just a couple S9's but i did not prepare my area for what eventually turned into an expanding operation. I wasted both time and money because i simply did not plan for ANY expansion whatsoever. If i were you i would reorganize your operation into something neat, organized and scalable. This dramatically reduces troubleshooting time and increases your uptime. I would also suggest learning how to do electrical work yourself as it will dramatically improve your ROI especially considering you have very expensive .10 cent power. Depending on the electrical setup at your location, you should be able to add a breaker, run wire, and attach an outlet pretty easily. After paying $200 an outlet for my first two S9's, that was the FIRST thing that i resolved to learn to do myself and it has saved me thousands by now. I ended up installing a sub panel, breakers, ran all the wires to my PDU outlets, and only paid an electrician to come inspect my work. This ended up costing me $100 for the electrician's time plus $250 in materials instead of the 4k he quoted me to do the work himself. I hope you understand, i am not negatively criticizing you, just trying to provide some input to encourage you as I am sure you will end up outgrowing your current space.

Lastly as i am sure you know, HVAC is a pain... I have learned both through trial and error along with hours of research that the key to keeping the operation running profitably does not necessarily include air conditioning, rather successfully exhausting the hot air out and away from the miners. The biggest and baddest commercial mining operations out there are finding that large traditional monolithic data centers dont work that well for mining because the HVAC infrastructure ends up using up to 30% of the power capacity of the the building. Instead they are focusing on smaller spaces with massive airflow. This quickly gets rid of the exhaust while feeding the miners with a positive flow of clean ambient temperature air. I think where you are located and what the ambient temperatures are plays a big role on how realistic this is for you. Again, congratulations on your setup! I hope you do not interpret my comments negatively, i want to see ALL miners succeed