There may be more structure required but starting off from a C corp obviates the need to transfer control of assets (particularly intangible ones like copyrights to source code).
You're paying a substantial amount of money up front to hypothetically mitigate a hypothetical future expense that only occurs at the point where cash flow (at least on the order of "covering legal expenses") stops being an issue.
That doesn't sound like a good deal to me, but that's just, like, my opinion, man.
Last time incorporated a Delaware C corp it cost me a couple of stamps and filing fees. I don't remember exactly but it definitely wasn't an obscene number. The annual upkeep, including franchise tax and registered agents, is around $600.
If you're not going to have a nexus in another state (i.e. No physical location or storefront) then that's peanuts for having a corporate vehicle in the the state for corporate vehicles.
If the cost difference of a couple hundred bucks is enough to break your bank, I'd suggest finding a 9-5 job rather than incorporating.
Part of the premise of Gust Launch is that it's far simpler to start this way, as a Delaware C-Corp with expected structure, than it is to convert later. The conversions range from easy to extremely painful but they're almost all avoidable.
