I can't believe you have all that pro style equipment and use "unknown seeds." You can't cook a good steak from a bad cut. Start with good genetics and your plants will be a lot more giving. Surf the seeds and strains forum to find a seed bank.

I just use a 250w hps for my cab grow and I never have temp issues. 1000w sounds like it could get hot. An a/c unit would be good and wouldn't really raise humidity.