Cobra is going to be incredibly expensive but its probably your best option at this point because your wife is going to have a preexisting condition so getting new insurance is going to be pretty much impossible. I'm not sure where you got your quote from, but I doubt they would even insure you depending on your wife's condition. If they will insure you, it will likely be for everything BUT what you're getting covered for.
Where did you get that quote if you don't mind me asking? My license lapsed nearly a decade ago so I have no real current info but 101 is providing you with solid advice. Otherwise, your best bet will be to talk to several insurance agents to see what they can do for you. Definitely find out about Cobra or about getting insurance through your employer if possible.