HELP!!!!Need to make $20000 in the next year for university

Hello all. I am heading off to university next year and the average cost for 1 year at the school is $20000. I want to try and make that much over the next year and a half to help pay for the schooling. I would like to get some help/suggestions from you guys on here if I could. I am planning on doing adsense using the "google grinder" business model to build a whole bunch of niche sites online (basically build a virtual real estate of sites) that each profit around $4 - $10 + per day.

I would like some feedback please if this would be a worthwhile way to go. The way I figured it out is that if I can make between $50 - $100 per day with sites like these then I will be able to meet my ultimate goal of $20000 over the next 1 - 1.5 years.

Also what do others suggest as well/instead. And would adsense be a good way to go about monetizing these niche sites or would amazon affiliates or something else work better. (I would prefer not clickbank, have had bad encounters with them in the past). Any help or advice would greatly be appreciated.

Thanks.