Hi!
I've got a 2014 Taco DCLB + 2015 Fleet and it's a great combo!
It's me + old pug + young heeler.
I changed out my stock tires for E-rated BF Goodrich AT T/A KO2 tire 235/85-16 and quite like them. The E-rating is much better for the extra weight, and for the rigors of off-road, rocky places, etc.
Also got the Heavy Duty OME suspension kit, even thought FWC only recommends airbags - I do a fair amount of "what's down that road?" exploring and wanted to make sure I was good out there. (search my name and see my trip reports!)
I have airbags, but have yet to install them. Most everyone I've talked with says it makes the ride way better, but there's some concern if you do a lot of articulated off-roading. Someone else will have to speak more to that tho. I'm a novice there.
Bring extra turn-buckles! Put nuts on top of your current turn-buckles.
Check them every 200 miles (or so), and after extra bouncy areas.
As for traveling with dogs... I recommend keeping a towel near the camper door and have a mat at the bottom of your steps. My heeler, Argos, is fine with me touching his feet, so it's not too difficult to wipe off his feet before he jumps into the camper. That said, he often jumps before I get a chance to wipe his feet. Be prepared for dirt in camper! :-)
I had carpeting on the floor for a while, and that's easy to shake out. But sweeping is also super easy.
I took the rear seats out of my Taco and built a platform in back there. Argos gets half the back platform, and a footlocker gets the other half (I'd prefer slide-out drawers tho). My chairs, roll-up table, shovel, etc stow under the platform.
Every time I go out, I find something new that is handy. This time I hung my TP with paracord and two little 3M hooks out of the way, but for easy use from the porta-potti. Check out the "low cost mods" thread here for some great ideas!
Have fun! Post trip reports! :-D