You might want to reevaluate your career aspirations right now before investing a lot of time and money into a field with not much of an upside over the next 10 years. You really need to think about opportunity cost and where you will be in 5 years. Starting a job as an indentured servant, to only be an indentured servant in 5 years time does not make much sense. Sometimes, it is better to cut your losses. You can always return.
From what I know about ACE, they used to recruit a few FO's who applied/called for the job. The one guy I know who got hired this way was 19 when he got hired. My theory on why they would hire someone so young was because you have to be 23 to get your ATP, so that gave them a little time to possibly hold onto the guy, but at 800 hours TT he was out of there anyway.
Your odds of showing up in Anchorage and getting hired on the spot to be an FO are very low right now. There are too many qualified guys willing to work for free right now. No turnover means no new hiring.