OP, if you really want to come to HK, why dont you just jump on a plane and come here? As a US citizen, you are entitled to 90 day visits without any visa. You can probably do a few trips to Macau before immd would start to ask questions. So I think you could stay at least a year or so before getting any pressure to leave. This is all perfectly legal and legit as long as you are genuinely a tourist.
What is not really legit, but I dont see much harm or risk, is if you can build some business connections, online business, job hunting etc duing this time then this could be your ticket to a long term stay here. If you cant get anything within a year then its time to leave.
I still think, as others do, that you are not going to find anything and you are better off finishing your degree and coming a bit later. But if you are so stubborn and have your heart set on coming here, then just do it.
This of course will require you have some savings to live off. Also remember to arrange some private health insurance as you will not be covered under HK system on a tourist visa.