If all else fails, you can buy a double for 78 bucks at MicroMatic and add a center faucet to it.
I bought this one 3" Brass - Air Cooled
for 78 bucks and it comes with 5' of 3/16" beer line, and has worked great for me. You can either add another tap by using this Adapter
or just drill the 2 tap one for adding a third tap. Just an idea...