To answer your question, while it's not an offer I'd likely take up, I don't think it's slave-labor lame or offensive, so long as you make things clear as to the exact terms of the arrangement. Nobody is forcing anything to do anything, so IMO the only time you'd be in the wrong was if you misled anybody.

However, I'd like to encourage you to "shop local". While it doesn't appear to be the case, there are a lot of talented devs available locally. I'm part of a fledgling makerspace on O'ahu, and in the past few months I've met a ton of developers that came out of the woodwork. Did you know we had a startup weekend here? Our makerspace also had two teams participate in node knockout.

I can't speak for Maui, but I'm sure the situation is the same (and you guys have a more mature makerspace, why not join up and start networking?).

If you need any help networking (I can get you in touch with alohastartups.com), or are open to an alternate proposal, feel free to contact me (contact@freelancedreams.com)