I've had good luck working with my doctor and pharmacy to get bulk meds when we're going out of town. The tricky part is getting insurance to approve it. I finally worked with HR to switch over to Express Scripts to get 90 day supplies of all my meds.
You'll probably need more coordination that most because of your refrigerated meds. I would call your insurance in advance and request them to work with you to switch the FedEx delivery. This means you won't be able to travel spontaneously though, because you'll need to be in an exact location when they ship.