If you know 5 GCs well enough to sign off for liability on your work, it's not necessarily a bad plan, but at that point, you're already bootstrapped enough to squarely make it into the middle class, as you could have just been offering to the public under that license or as an unlicensed sub to those 5 GCs.
I don't hate the idea but it's not a bootstrapping plan. It's a plan for someone already bootstrapped.