Im a B1.3 holder. to get a B1/B2 would take 5 years min from scratch. you may get some time off that for having your degree but i wouldnt bet on it. its next to impossible to get into without gaining an apprenticeship first or military service as an aircraft fitter.
If its what you want to do, then go for it but i suspect it wouldnt be what you are looking for. its not a job you can easily fall into.