Hi Gavin, welcome to the addiction. Congrats on your first molt experience. Now hold the molted skin and compare the growth of your fireleg. Be ready to be amazed at how much they grow. Now don't feed it for at least a week. It needs to harden it's exoskeleton and fangs first!
As far as Brachypelma boehmei's go, you made a good choice for a first tarantula. They never hide, always lurk around in the open and are beautiful display spiders. They don't grow as fast as some others in the hobby and do not eat very aggressively either. Be prepared to wait patiently for them to become hungry. I also note that they do not like taking on big feeders. A cricket that jumps violently when it's grabbed, will be avoided. You will laugh sometimes if you see how they will run away from their intended prey. So rather feed it small feeders - half it's size. Sometimes it takes a long time to get them to feed a first time, especially when they're small. In that case you can remove the cricket's jumping legs and immobilize it to make it easy prey.
One word of warning - firelegs are more prone to flick hairs than most other T's. The slightest intrusion will set it off.I think they're a bit more defensive than most, probably because they're so brightly colored and stand out more in nature. Keep your face (eyes especially) away from the spider,at least until you know it's behavior better.
Africa is a tough country. When the going gets tough, we get going.