I seem to recall that you have to file for trader status for the following tax year - you cannot be retroactively apply it to previous tax years. So the OP can file for trader status for the tax year 2018, but the window on 2017 is probably closed. In that case, it won't help the OP with his problem.
My advice to the OP is to take your maximum $3k a year capital loss until you eat up your entire loss. Also either purchase the tax guide at GreenTraderTax or set up a consultation with them so you'll be more prepared in the future.
Absolutely correct.
Yet, the only thing he can do via going backwards is if he had been trading through a business identity.
I'm sure after he gets professional trader tax advice and his taxes are filed correctly...he'll be better prepared for the next tax year especially while working another job and trading in the same calendar year.
wrbtrader