We have the A127TH and love it. The floor space when you put the bed into couch mode is great, but it's not very comfy for sleeping. We have purchased a 4 inch memory foam topper for it. It feels great but we have yet to try it out for a full night's sleep. I pull with a truck that has a fiberglass tonneau cover so storage has not been an issue. We've put stuff on the floor in the trailer (under the bed, under the table, or in the middle) while traveling. When set up we use (like Cattledog) a wire shelving unit above the stove to store the things we use and it works great! So far it's been the best thing we've added to it aside from the screen room. We purchased the screen room when we bought the camper and we fell in love with it the first time we used it. Unfortunately the bottom screen skirting needs modded for the 127TH because it sits up higher.
We have used the front deck to haul bicycles and plan to use it for some of our motorcycles in the near future. We also use the deck for seating and it works great. We have some tiki torches mounted to the deck and we get a lot of attention when we're sitting on it with torches lit
I have been looking at some waterproof containers to put on the deck to haul our camping stuff...mostly just to put everything in one place so all I have to do is grab it and throw it on the deck and I'm ready to roll. Plus it can handle rain so no worries there either. A container like that might work for you for extra storage.
Oh, going back to the couch/bed: somebody mentioned the pain of removing the bedding to use it as a couch...We found a great deal on a Travasak and it works great! It's all in one so you just roll it up like a sleeping bag and throw it in the truck if we need the space. I'll be able to put our 4 inch topper in the truck too if I need floor space for having people over or whatever.
Gosh all this talk about campers is driving me crazy. Must go camping soon!