I did buy that Frigidaire dehumidifier because well its the best residential one out there and it has the external drain in case you need it instead of the small internal container. I love this humidifier. Its a very solidly built kit. Don't use it all the time but when I need it, its so reliable and always ready to go. And the RH control setting on it is very accurate. Set it to 50%a and it locks it in. only complaint is they are electricity pigs.
I grow in a tent thats in a garage and there isn't a drain out there. So I put the hose in a 5g bucket and that can last a good couple of days before I have to empty it. Since I'm around all day long its no big deal.
I'm finding I'm running a humidifier for the first 30 days to get RH to about 60% for good healthy veg growth. Then I remove it and put in the dehumidifier for the duration of the grow.