We had a pop-up for a few years and enjoyed it, but got a bunkhouse when we planned a 3 week trip out west. Did not want to 'pop' up every day, also some campgrounds in Yellowstone did not allow pop-ups (bears). We purchased a 5 year old bunkhouse and have enjoyed it very much. I would definitely look for bunks. Your kids are small now, but will soon want more room. You can also keep the beds made, no converting at bedtime. I wish we had a slide, for those days it does rain and everyone is inside, wish we had more room. Another thing about a bunkhouse, when your kids get older, they will want friends to go with them, so more room the better.
You have plenty of truck for most TT's. If your's is rated for 10K, I'd look for one under 8K lbs.
