Hi Chris! Thanks for your reply.
All of these options are wayy too expensive. At this time, my budget is in the ~$250 range.
I also cannot afford to do post sound, I prefer a single system solution that records the audio directly into the GoPro. The Sennheiser wireless microphone systems are tempting as I’ve had good results with that before. Still on the pricy side. The other devices I’ve come across is “Polsen ULW-16 – 16-Channel Camera-Mountable UHF Wireless System with PL-5 Mini Lavalier Microphone – (584.400 to 602.450 MHz)”. What are your thoughts on that?