I've been around the block a few times, so maybe I can give you some counter advice which I hope you're find useful.

- Projects can be technical successes without them being satisfying/fulfilling in one way or another for all parties. Developers are usually skilled at development and not so skilled at navigating political problems. Good managers are worth their weight in gold because they take care of those problems (IMHO, managers who avoid dealing with those problems are probably not worth working with). It took me a long time to realise this. As I've gotten more experienced, I've learned how to deal with political issues and I can do that role if I need to -- but I'd rather not. So basically I tend to demand: give me a great manager or a lot more money ;-)

- Equity is fine, but it's often a big risk. Even more, asking for equity means placing you back into the role of having to deal with political issues -- because there are a lot of ways to screw people over when it comes to equity. Entrepreneurs often do that role because they like competing for money. Good entrepreneurs (the ones that will have successful companies) are good at making sure that they end up with the money -- just like you are good at writing code. You probably don't want to place yourself in competition with them. My philosophy: cash on the barrel head. I don't work for promises (though I have a bad habit of giving outrageous discounts to work on projects that I want to work on ;-) ).

- Project management is hard. A person who doesn't understand this is likely to be a really bad project manager. Most projects have lamentable project management. After decades in the industry I've learned innumerable ways to screw up a project. I have learned precious few ways to succeed dramatically -- and those ways can easily be pushed over by well meaning, but under experienced management. (And come to think about it, they can be pushed over by well meaning, but under experienced me). Any idiot can succeed when the situation is set up perfectly. The real trick is succeeding when everything is against you. Learn to play in hard mode -- it will help you in the long run.

- It's hard, but important to control your ego. In addition to not over-estimating your worth/ability I also mean not under-estimating it. All projects have risk. If, in a headstrong fashion, you demand to control everything that you think introduces risk, you assume that risk. Others then depend on you. If you fail, then you may destroy their dreams/livelihood/fortune. It is possible to put yourself into a situation where you have assumed all the risk for the project, but almost none of the consequences. People who will suffer the consequences, but control none of the risk will naturally be put into conflict with you. It pays to be careful. On the other hand, judiciously putting risk into the hands of those who are most able to mitigate that risk is wise. That person may be you. Before getting too deep into the project, make sure that you see eye to eye about this with your partners. Failing to do so can cause the failure of the project all by itself.

You seem like a passionate, genuine developer so I wish you good luck in your endeavours.