Im at 65,000 miles about 9,000 towing .
My camper is 3,300 lbs unloaded ,i figure add at least 500 -600 lbs for water and supplys so apx 3,900 lbs max.
Its 7 feet wide its a 2007 fun finder 189fbs 19 foot they say.
Mine is measured from back to front ball ?
My dad has a 19 foot 8 foot wide comes in 500 lbs more then mine and when side by side it is at least 3 foot longer(his is measured from front of trailer to back) Dad uses a weight dist hitch with 2 rod/chain type swaybars(a pain to put on)
loaded he is close to max towing rating of 4,500 lbs on his honda pilot(same as H3) where im coming in at under 4,000 lbs.
Your trailer is more like my dads.
He gets 10 mpg with hills and 11 mpg mostly flat.
I get 11 1/2 mpg hills 12 1/2 to 13 mpg flat.
I bought a wind deflector and got a increase of 1 1/2 mpg hills 2 mpg flat.
I recomend getting one.
(JC whitney)
I recomend with your hitchweight of almost 500 lbs you use a weight dis hitch with double sway bars..
My hitch weight is only 290 lbs.
I have a aftermarket hitch(below bumper) with a 2 inch drop with a friction type swaybar on the right side only.
If you have a factory hitch you need a 4 inch drop.
Also my camper sits closer to truck then his.(If backing up I have to be carefull not to angle to the right to much or my hitch jack hit my tire cover,I upgraded to a electric jack because if unhooking when not lined up straight the handle on the jack would rub against tire cover)
When on flat ground you dont even know the campers back there.( drives like a dream)
On long hills like the ones on my ny to nm trip(5,000 miles)
It kinda lugs up the hills.And hard on the truck
You cannot hold 60/70 mph without hard downshifts to second.(yes i tried manually putting shifter in 3rd,same as leaving in drive ,OD seames to kick in and out fine)
I find if I bring it down to 50 mph its not so bad and if at 50 mph it goes down to 2 nd its revin at 4,000 rpms.(not to bad)
At 60/70 mph it has a hard downshift and reves at 5,000 to 5,500 rpms(not good)
I had no tranny issues YET.
Im doing the same 5,000 mile trip in june and feel comfortable it will have no issues(I hope)
You might have more problems coming in at 500 lbs more weight and being a foot wider and 3 feet longer.
Thats 25% heavier and 12 1/2 % wider and about 20 % longer.
Thats why I bought the fun finder, it has a 20 inch X 6 foot slider that makes the inside wider in the middle.