Species for 80F+80H% Small?

I'm looking for suggestions on what herp, if any, to put in my planted 18x18x24 terrarium. I can vary temps and humidity a little of course, but at the moment humidity is kept high to keep leaves from cooking under an intense LED panel. I'm using the LED because it's cost-effective and encourages dense growth over height, which is ideal for my smaller tank. I'm wondering if I would be able to keep any herp under these specific conditions, or if I would need to find lower temps and/or adjust humidity— which means reconfiguring my lighting setup before Spring. Ideally I would like to avoid UV supplementing, but it's possible.

Specs:
Hot tropical biome (monsoon/equatorial)
Temps are 80-84F day and 74-78F at time of sunrise
Humidity is stable constant 80%
No UV

Current species:
Shefflera Umbrella
Plumosa Asparagus Fern
Isopods
Mycelium + lichens
Soil microbes

Potential future species:
Japanese Toad Lily
Lily Magnolia
Banana Croton
Hairy Cushion Moss


Thanks for any help.