You're confusing cedar with cypress. Cedar is bad, cypress is good. Cypress mulch acts like a sponge - it soaks up water and releases it slowly so you get decent humidity w/o constant spraying.
I would keep the RHP, maybe just dial it back a bit so your cool side is in the low 80's. Also I've found that if the hot side is in the mid-90's the BP's don't use it as much, maybe dial that back to 91-92.