Agree with the "lots of research" theme but to get much help here would need a lot more info:
How big are the dogs
Have you been in a 24ft MH (more than 15 mins with the dogs)
Is it just for weekends (maybe 3 days)
Will it be for longer trips or time (over a week)
Have you or more inportantly the wife driven any MH's
(the difference between 24ft and 26ft is significant in interior
space but not so much in driving)
Will you be dry camping (boondocking)
Will you be at RV parks with full or partial hookups
Summer, Winter, year round
The list goes on but I think you get the idea. Need more info here to get you suggestions that would be more to your ideas and useage.
Shopping and research can be part of the fun but keep in mind if you go in an RV and something just doesn't feel quite right it won't get any better over time.
Good Luck