Silver!
I agree with Ruth...the diabetes is a GREAT incentive...but planning for your sister's wedding, since it's a year away, is a good goal setter, as well!
Good for you for taking the initiative to take care of yourself.
But be aware that you rarely lose as much as you did the first time when you do P1 again. Think of it more as a detox time to get your ready for losing in P2, okay?