Hey HN,I worked on a side project from Aug-Feb of 2020-2021, when I decided it could actually become a product that I'd like to release and, depending on reception, quit my job to grow into a business. Since Feb, I've been productionizing the codebase, setting up infrastructure, creating pitch decks, business plans, and feature specs for the upcoming beta. I've written about 100k lines of code, which are split between data processing pipelines and a front-end web app.I realized about a month ago that I wasn't going to make my target release date alone, and asked if my friend would help out. He loved the idea and said he'd be happy to. After introducing him to the idea, I told him we should come up with an equity split (even if it feels premature) that's favorable to both of us just in case. He, being unfamiliar with startup investing and equity splits, told me to come up with a number and it'd probably be reasonable.I'm struggling to do that. If I were to try and do the whole thing on my own, I wouldn't be able to launch by my target date without cutting significant features, but I do have the skillset to do it. He has no background in the business side of things.So, we're looking at a co-founder who:- Will be working part-time (same as me)- Has a similar programming skillset (but more experience in web app dev)- No business background- Coming into a project where the idea and release are mapped out, and 100k lines of code are written.I want him to be motivated in case the beta goes well, but a 50/50 or 60/40 split seems unfair. To complicate it even more, the beta should be revenue-generating from day one, but of course who knows how well it'll perform. Could be a few hundred in revenue (10+ users), could be tens of thousands (200+ users).I'm considering an 85/15 split with a 50/50 revenue split after expenses. Am I totally wrong?