But if getting a little bit back makes people give more, than why not?

Yeah, people are more willing to contribute If they get something in return.

Why SQL?

I fact i have a Very Basic understanding of coding/programming, so It was Just a Dumb suggestion based on what i read about SQL. Just ignore It.

So maybe I would start with more something like 50/50 to make sure server costs are covered.

Makes total Sense, and i dont see It would harm the investor Desire to delegate a bit.
Just need keep It clear How the return Will be calculated when the funding campaing starts.