Update: I passed my EOC PT Test retake! (63 PU, 54 SU, 15:35 2MI)

88H as an MOS is fine. Tests are easy, most activities are outdoors. It's a low ASVAB score MOS, so similar to Sorrybrah's 92A experience, there are many characters you have to learn to navigate through, but a lot of them are fine too. I was in the same boat with not many choices as a Reserve MAVNI. The duration is short enough (8 weeks as long as you don't end up being a holdunder/over). E Co here at Ft Eustis isn't the typical AIT location, and it's not the most pleasant either. You don't get to keep your phone, instead you get it only on weekends at the end of your 4th week of training. You will be stationed with other 88 series trainees (88K/L), and will have a pretty hectic PT schedule (M 3-5 mi AGR, T muscle failure, W interval run, TH platoon-led PT, F 3-5 mi company runs). Just stay out of trouble by following their rules. Avoid all counselings and articles by not being a "sh*tbag," pass your PT tests, and don't fall out of the runs to keep your privileges and avoid remedial PT.

I don't think it'll be an issue with USCIS, since there have been many naturalized expired F1s. There's been talk here at E Co though, that people without status might become holdees. I haven't been naturalized, but I renewed my DACA until 2020. I'll find out if me or other expired status MAVNIs aren't released at the end of the coming week, which is when we're scheduled to graduate and go home.