Need help with air conditioner

It's dark now. I turned the unit off for about 20 minutes, opened all the doors, windows and vents of the TT for about 20 minutes. I started the unit up and it's working quite nicely. I did a whole bunch of reading on this forum (past posts - and yes, some of us look them up and read them), and on other sites. I've decided that I'm going to buy a dehumidifier tomorrow - something not too extravagant, but large enough to do the job - perhaps something with a drain hose that I can set on the counter and drain into the sink or in the tub and drain there. That way - I can suck some of the humidity out of the trailer. While my humidity, at least according to the temp/humidity gauge I have in the trailer, reads similar to the outside - 60% humidity with 85 degrees is a bit too much (and yea, I know I'm not in Florida - but I spent 30 years in Arizona and live in the dry climate of West Texas). So I'm rambling. Any tips you all can send re humidifiers would be helpful.