Pastel, not super. I think you've done a good job with his husbandry given the hand you were dealt.
Once you're ready to move him out of the 10-gal tank I really like these if just keeping one all python or similar-sized snake - it holds humidity well and with the four latches it's difficult for the snakes to push the top off and escape:
https://www.lowes.com/pd/Hefty-25-Ga...Lid/1000505547
Now that said, the little darlings are like potato chips, you don't usually stop at one. If you find that's the case for you then get a rack.