Okay. here's what I'm gathering from everything I've seen on this thread.
1) Getting paid at all let alone enough for 7 people after 2 chapters is a ridiculous expectation. That kind of money doesn't come that quick at all! Ask any webcomic artists on here, even the more popular ones who've been posting for years and they'll tell you they do not get paid enough for one person let alone two.
2) You cannot expect that level of professional art for free (see point above.) And no, having nice art doesn't guarantee success either- it's the storywriting which falls on you/ a writer that will captivate an audience. And you need evidence of your writing work.
3) You are throwing yourself into two large projects and promising money you don't know you'll have. It's risky! There's no harm in writing a short story, hiring an artist and seeing how it goes- way less stressful on both ends.
It seems you're inexperienced with comic making, which is fine because we've all been there. But please do concider what people are telling you on the thread, especially since most of us are comic artists. Especially since promising a financial gain can bite you in the ass later.