First off, if you have a sealed room with naked vert lights, you can only grow about 22-25k of light at any one time with a 200A service (with matching AC/chillers/etc.). I know, I blew the wire off my pole twice. They upgrade my supply wire seeing as it melted. I had the police, firemen out and everything because it started a small fire below the pole from the fireworks... not a problem (the sealed room went to 86% humidity but no smell!)
If you rated over 350A on a 200A service, you had to know you were walking on thin ice.
Solution: Spend approx. $8k on upgrading to a 400A system. Tell them you need to run multiple welders simultaneously etc...
You've spent all the money on the right things so far (except for those shitty dehumidifiers), so spend another $8k and you'll be good to go! Be warned though, a 400A service box will make your current on look tiny!