My New Coin Storage Locker

I bit the bullet on buying a cabinet to store my collection in. Although it's in my basement, the basement is fairly small and has a heat run, and I placed it near there, near the outlet. I put a humidity gauge in the area and it's generally under 55% and relatively cool.
I thought it may be a good idea to cover any seams with metal duct tape, and I am trying to keep the door sealed with weather stripping.
The image is with a new recording type temp and humidity gauge. I reset the numbers last night , the gauge is showing the current number this morning and the high/low numbers for the last 12 hours or so (since I reset it). Those numbers look pretty encouraging (will need to continue monitoring, especially on summer. The temp should stay low, unsure on humidity).
So this morning a added one of the cup-type absorbers, "Damprid", to the bottom, and a box of baking soda meant for refrigerators and closets (with the peel open side panels).
If I could get the humidity down to closer to 40%, I think may be a little better.
Plenty of room to grow, nothing is really cramped together, which is probably a better situation than packed tightly. Don't of my sets I'd like to get in to sealed boxes as well, I've been researching different sizes.