Hi. Glad to see that your new froggie is doing better.
as far as the possibility of chytrid, I'm pretty much to the point of simply assuming it in WC or exposed to WC frogs, and treating as a matter of routine. You can use the Lamisil spray technique, which is super cheap, and doesn't require a vet. I'm currently doing this with my WC Clown tree frogs, and it seems to be working out well. After a few treatments, their colors become much more vivid and their appetites seem to improve. This suggests a subclinical infection, despite appearing generally healthy. They tested negative when I first got them, but false negatives are not uncommon.
i would not try the elevated temps for treating Chytrid, as the lowest effective temps are in the upper 80s, and would likely put too much stress on an already stressed animal. Temps in the upper 70s to lower 80s might be a good idea though, as it shouldn't stress the frog, and should keep the Chytrid in check (if it's there).
Another consideration with WCs is that they just about always have parasites. I believe that Dr. Frye does low cost fecals, and most issues can be treated with Panacur. I would do that as soon as you get some money together.
Thanks for the heads up on Snakesatsunset. You might want to write up a review in the feedback section.