Then you should be fine. 80% would the highest I would want and I wouldn't want that 24/7. I mean inside a termite mound or inside a rodent burrow I'm sure gets pretty humid but again, 80% spike is fine, 80% constant, I would avoid. Also watch the BP, if she/he is trying to get out of the cage constantly, then you know something is off. If he/she is just cruising around at night being a BP, then you are fine. The substrate isn't wet you say, so I think you will be ok.