You should have no problem getting the OWP within the next couple of months. There's no need to restore your status (which you can't do anyway, unless your status expired within the last 90 days). Keep in mind that the OWP will NOT give you legal status again...it just allows you to work, get a driver license, health care, etc., which is still a big step forward! You won't have legal status again until you land as a PR.
I don't know if you'll also need to pay the extra $100 fee, or just the $155 that you would have paid if you had included the OWP application with the Inland application. I suggest that you do include it, just in case.
Good luck!