I had bought several small parlor palms years ago and put them all in one pot, as they grew, so did the pot size which is now up to 10" or so. The palms are all 3' or more tall.
I can't advise on anything to do with the grow lights, if it's enough light, or too close to the fronds because I have never had one.
Mine is off to the side of a large window where it gets bright indirect light.
I can tell you that this plant
does not like to dry out completely which can be one of the reasons the fronds are drying up.
When the top of the soil (about an inch down) starts to feel close to drying, it will get watered well until it flows out the bottom, (empty out any excess) You have to be careful NOT to over-water though.If you have a peace lily
, treat it pretty much the same way.
The temperature you have yours in is fine.