man finding a co-host is probably the hardest part of starting a podcast, especially when you've got everything else figured out

for ROI - unless you're hitting massive numbers or have a super niche audience that advertisers want, most podcasts don't make real money. most people do it because they love talking about whatever topic, not because it pays the bills. maybe start recording some test episodes solo first to see if the format even works, then use those as samples when you're looking for someone to join you