What would you do? 24’ or 28’?

We also tow with an F-150 CC with 5.4 and factory tow. It's an '03 and rated for 8000#. Recently moved from a ROO 23SS Hybrid to a Rockwood Ultra Lite 2604 with GVWR of 6629#. I am just all about the 25RKSS you linked. I'm not a fan of bunkhouses unless you have considerably older children and since you're waiting for #1, you'll not have to worry about that for many years. I would be most uncomfortable with a toddler or very young child having such a great place as a bunkhouse to fall off of. Personal opinion. For your purposes for the next several years, you'll be in the Pack n Play stage, then you can get a child's size sleeping bag for the dinette or sofa to last you a few more seasons. By then you'll likely be doing Pack n Play + the sleeping bag. Normally I would say making up a bed every night is a PITA, but you would not need to actually "make the bed" for a small child, just drop the table or open the sofa. Meanwhile, the 25RKSS is IMHO, perfect. I would not even remotely consider a TT without a slide. Somewhere in the mix, you'll likely add the requisite dog and space will get tight with everyone + the pooch. I think you would be a good 6 - 8 years down the road before you'd need to consider a BH. Opinion? If you can say you LOVE the 25RKSS - get on over and give those folks a deposit. Camping weather is bound to arrive, sooner or later. Good luck and happy camping!