How many people are you transporting?
2 => use Magical Express $35 x 2 x both ways = $140 (maybe $5 tips if they handle your big bags)
3+ => Limo one way, possibly.
Or if you will need/use a rental car at WDW before/after,
Do the rental car thing and drop-off and/or pickup at Cocoa or, now Port Canaveral.
This can be coordinated if one party takes the luggage and the other drops off or gets the rental car (my wife and I had this down to a science, and cell phones are helpful).
Rental cars are a lot more expensive now than they were 10 years ago, but saving $35 per person on Magical Express can go a long way.