Hey!
Wow, first, I'm in complete envy! My wife and I took our honeymoon to Alaska in July of last year, and I'm ready to go back again!
I'll post just a few quick thoughts, and then let you ask more detailed questions that might pertain to you situation better.
First, I wanted to go minimalistic as well. This left me looking at a pop-up rack mount type tent. After looking awhile, I decided maybe a slide-in unit would be nice, so we'd have a place to cook meals and shower. However, since my truck is a short bed, the slide-in camper selections were fewer; this, coupled with the fact that the entire bed space would be taken up, pushed me toward looking at travel trailers. A requirement on my part was making sure I had room to take along plenty of tools, additional fuel capacity, and spare tires.
Thus started my search for travel trailers. One thing led to another, and I ended up getting a new 2011 Sabre 31' bumper pull. To make things concise, here's some observations. Pulling a 31' TT from a bumper with a SRW vehicle is alot of work, even with extensive modifications to the truck. In some regards, I wish I'd have gotten a trailer around the 20' length, both for better fuel mileage, and ease of towing. I also would've spent more time talking to guys here and elsewhere for advice before buying anything!!
That being said, our journey consisted of 10,325 miles. We started in Knoxville, TN, crossed over into Canada in North Dakota, meandered up through Laird Hot Springs, Dawson City, crossed the Yukon River on a ferry, and took Top of the World Hwy through Chicken, Tok, etc. We went through Fairbanks, down through Denali, Anchorage, and then headed out on the Kenai Peninsula. We stopped at Seward, Soldotna, and Homer. The journey back brought us through Jasper and Banff Canada (highly recommended), down through Montana, Yellowstone National Park, and the Grand Tetons.
I think we only paid to park 6 times during the 26 days we were gone.
We spent $3840 on fuel, $550 on food, $180 on camping and dump fees, and not much else.
I made an additional 80 - 90 gallon fuel tank that sat in the bed, and it helped tremendously. We took alot of the off-the-beaten-path routes, and having the extra fuel capacity kept us from paying over $6/gallon several times!!!
All that being said, fuel is (of course) going to be your biggest expense. If you travel as budget friendly as possible, this will likely be 80% of your cost or more. We averaged about 9 mpg, and weighed in at 20,300 lbs plus or minus depending on how much fuel, etc we had at the time.
We never had a blowout on the truck or trailer. One of the trailer tires developed an "egg" in the sidewall that I noticed before it blew.
We travelled over 500 miles of gravel/dirt/offroad that required 4x4.
To do it all over again, I would have gotten a much smaller travel trailer. I would have taken twice the time off. If you don't have at least 6 weeks, it's almost not worth going. The exhaust brake and air system I installed was a definite plus, as well as the extra fuel tank. The Carli suspension helped tremendously as well. I almost completely wore out a set of Toyo A/T 285/75 tires on this one trip! Pulling 20k pounds up/down grades really takes its toll.
Here's a quick pic of our setup:
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--Eric