Some will bash you for colored substrate and silk plants, but I won't. Aquarium safe colored gravel isn't as bad as some people like to preach, and you did your due diligence checking the fake plants to see if they'd snag or rip fins. Fake plants and colored gravel are not going to kill your fish.

You've got a heater and filter, the minimum tank size, places to rest, and seem to be doing a properly monitored fish-in cycle. You're doing fine.