To help answer your question about hauling 2 RT's in a toy hauler let me suggest you start by laing out the garage portion on the driveway with chalk, 2x4's or whatever. Widest would be about 96" for a 102" wide trailer. Setting nose to tail you would need about 20 ft allowing for some walk around room. Now, start cramming them in a shorter space to see what you are comfortable with. Remember you have to tie them down and walls don't move. I tried backing up the ramp on mine and it did not work, tire spin.
There are more manufactures making Toy Haulers every year, so you have a lot to choose from. Not every dealer will carry every Forest River product line. Have fun shopping.
In an earlier post you ask about a tow vehicle, This is not an easy answer. I will add a link to Ford's towing Guide, every manufacturer publishes one. As general information, fifth wheel toy hauler will require a properly equipped F-350 or F-450 for the larger ones
http://www.fleet.ford.com/towing-guides/
Keep asking questions, also you can use Forest River Forums for information.