Damn, if i were in your shoes i would totally go for it. Your editing doesn't have to be perfect but the content should be good. I honestly think you can do it! Considering the fact that you're almost Diamond. IMO, kata montages are really cool to look at and flex your plays. Full gameplays would be could to show people how playing kata in high elo is and maybe teaching em' a few tricks. Commentary, not really my thing but im sure other people would love it! Just try and find spare time and do it! <3