Congrats, yeah, you don't feel the cold as much when you are driving a Cobra.
Don Pilling from Snake Bite(0755290877) can supply stainless set of soft top bows(frame) and mounts to suit your RMC. Then just find a local trimmer to do the fabric part. See what recommendations you get here for a trimmer.
When you get a chance post some photos of your Cobra in your gallery. Would love to see what it looks like.