We have not got to yours and hubby's stage Becky as yet, but we are slowly building our plans to do the same, and no doubt will have the jitters when our time comes. One thing I have to say though, is reading all the posts from members who have property on the island already, those in the process of purchase or building, which has helped immensely, and I think will help even more when the times come.
You have done the paper work, you have made the move, done the purchase or build. Now comes the time when both of you can now reap the rewards of your labours, and enjoy your life in Corfu.
Now that you have come this far, the remainder will fall into place in due course, including establishing your business. Seeing your mosaics, I seriously think you might be on to something good, at least lets all hope so.
You maybe having a relapse with your MS now, but as you said yourself, being in Corfu has helped, therefore, it will continue to help, with all the good weather, being able to get into the water, all helps, and the less stress of old Blighty.
Every happiness to you both for the future, and Good Luck.