I'd get rid of that humidifier first and foremost. There's really no need to be pumpung in excess moisture to the room, it will actually start to cause problems further into its lifes cycle, especially during bloom. That will help drop the temps a few good degrees, at least.
The temp your running at is ok really, but is a little high. The previous post is only a little off, the higher temps actually cause the plant to speed up its photosynthesis, but without the addition of a little CO2 will only cause the plant to stretch more, and cause runny buds.
Do you have any CO2 suppliments? If not have you thought of furmenting yeast and sugar? That process causes a nice jump in CO2 gas levels, for a cheap price, and would be perfect for your tent.
Another good technique to employ is to try and keep the roots as cool as possible, using chilled nute water works, as long as its not too cold, or else it could shock the roots.
Ultimately, if you have good ventilation you'll be good at those temps, but there are ways to definitely make it better...
Let me know if that answers your question, and if you need some more clerification on anything.
Peace