Yeah, I don't really have a style guide for chapters. I feel like if you feel like doing chaptering, just do whatever seems appropriate to you, as far as how many and naming conventions. But do please encode your MP3 back at 112kbps (or whatever is closest to it), and for episode metadata:
Title: Title (without # or the word "episode", eg: Stuffed Full of Fantasy)
Artist: The F Plus
Album: [the year the episode was released]
Year: [the year the episode was released]
Track: [episode number]
-in the case of non-standard episodes, I kind of wing it. For example, there's an "album" called "F Plus Live", and each recording is a chronological track number of that. So fplus_live_4a.mp3 is album F Plus Live, track 8
Genre: Podcast
Comment: thefpl.us
Composer [whoever edited this specific episode]
Album Artist: The F Plus [this is probably unnecessary]
I just tested and found out that you can take an episode with chapters and process it thru mp3tag and it'll keep the chapter info.