There are relatively inexpensive buses and shuttles between the airports, but they can take more time waiting and when they stop at multiple terminals. I've also seen long taxi lines and booking a "limo" can require you to call upon arrival and then wait for your vehicle to approach the terminal. You might be able to avoid this by using a premium car service like Carey, which can be very expensive, and paying extra to have someone meet you in baggage claim.

Perhaps more significantly, there's LOTS of road construction around the terminals leading to EXTREMELY LONG delays. Allow lots and lots of extra time for ground transportation between these airports.