That’s going to be a really tough sell for SOAP. You’ll be up against strong surgical subspecialty MD applicants who didn’t match as well, typically with board scores higher than yours. If you had applied in the main match straight off I think you would have been fine, just going by stats. Not having Step 2 will hurt, in my estimation.
You don’t have much to lose other than money by applying into the main Match and then going through SOAP... but you won’t have any day of where you will end up as you’ll be hoping for a position literally anywhere in the country.
The other questions are better answered by your school administration, to be honest. There are some PDs and helpers over in the general residency forum who can probably be of more assistance with your other choices. If you want, the mods can move this thread there for you.