Right, time's up, sort of.
With a grand total of 5 artists who offered their help (I'll leave it to them to introduce themselves if they want to) and besides me one other programmer, we're now a team of 7. Should be enough to get going. If anyone else wants to help out just give me a poke and we'll see what we can work out, but I'll stop actively recruiting artists or programmers.
I'll see if I can find some nice collaboration/project management software that I can install on my web server. Discussing the making of the game here would spoil the game for everyone before even seeing it.
Edit on that note: installing Ruby on Rails onto a Synology NAS in order to run Redmine on it is officially a punishment from a special circle of Hell.