Others will certainly chime in, but here's my quick response to your message.
First, all Fabriano Artistico papers, regardless of finish or color, will require the oxallic acid bath. It's not THAT big a pain in the neck, but it's essential. And, even WITH the acid bath I still had difficulty clearing in EDTA and so I abandoned it. The Cottman paper you've referred to is totally unfamiliar to me. It probably has no relation to COT320 which is a paper distributed by Bergger and sold various places on the internet. You don't say where overseas you are, but I know it's available in the EU. In general, the internet is a good source of information on papers that are compatible with alt processes. You can type in "papers for alt processes" or variations on that theme into your favorite search engine and spend a day reading about people's opinions and experience. It's important to note that not every paper that works for one works for all. Some people love Fabriano, but it was a little disappointing to me. I love COT320, but it just feels too expensive for me. I've used the Weston Diploma that people have identified as a good cheap alternative, and found it was a little fragile, and prone to staining when using hot developer. My favorite paper, now discontinued so I've begun to hoard it, is Rising Stonehenge. Cheap, clears fast, strong, fairly smooth, good color.
As for cheaper processes, you might search for "Kallitype" in this forum and also on alternativephotography.com. Sandy King did a write up for an easy to follow way to get started in Kallitype. It's cheaper in that it doesn't use any noble metals, and would allow you to learn how to do coating. Bostick sells a Kallitype kit, too.
Personally, PtPd is the only thing that really keeps me on the analog side anymore. It's really unique. Good luck.
Neal