OneDaySoon - Hi & welcome to Pprune. Its a bit like a flypaper - once you are on it, you can't get off
Before you decide which way to go, have a word with your GP. I had my medical yesterday with an AME (Aviation Medical Examiner) and passed it so I'm legal for 2 more years, he was saying that the average GP (a) knows nothing about the NPPL and (b) doesn't want to do it, even though it is purely a declaration of health & doesn't involve a physical examination.
I previously made enquiries at my GP about an NPPL medical and it was obvious that he wanted nothing to do with it even though he was the only one who could sign off the certificate.
So if your GP doesn't want to do it - you are stuffed!