What you do at your first position after graduation doesn't mean youryou're "stuck" doing that and doing something that is related to what you want (even if only tenuously) is way, way better than doing something completely unrelated like a factory job.
SAP might not be where you want to mainly focus your career but it's still a valuable skill to have on the CV and you never know when it might come in handy.
Option 1 is the only sensible move IMO - I wouldn't say you have to spend 3 years there though, realistically for a first role anything over a 12 or 18 months and you aren't going to be seen as a job hopper.