To all you guys who took the time to respond... THANK YOU!
This is actually our 3rd trailer, but the first two were just pop-up campers that I towed with my wife's 4 cylinder Honda Element. Neither one had trailer brakes because they were relatively light, but the 2nd one was at the towing limit of the Element (1,500 lbs) and I towed that camper to Connecticut and back (950 miles each way) three years in a row. During these trips I went through the mountains of Pennsylvania and New York. Yes, they're small in comparison to the big ones out west, but at least I have an idea of what it's like to go up and down some fairly steep grades with a trailer at maximum limit.
My concern is jumping to a significantly larger trailer with a tow vehicle (my Tundra) that I've never towed anything with yet. I just wanted to make sure that I'll be in good shape before I actually plunk down the deposit and order this trailer.
As suggested, we'll probably make a couple of small trips before the big adventure going out west. This should give me a feel for what it's like to tow with a larger trailer and allow me to dial in the brake controller and make any minor adjustments in the hitch/sway-bar set up. I'm totally new to the WDH and sway thing, but I should be okay once I learn how it all works together.
I think we're going to go ahead and put the order in next week, as the RV dealer said they would honor the RV Show discount if we ordered within the next 30 days after the end of the show.
Thanx again for the great advice.