As someone who started with the same idea and eventually pivoted, I'd highly suggest focusing on one vertical. Concentrate on solving this problem for a narrow group (say, outdoorsy people) and move on to other equipment categories. It will also simplify the marketing and custom acquisition on your end.

It's a really interesting problem to solve and I'm still bummed to this day I spent a year on it with nothing to show. I hope you solve the puzzle. Good luck.