Since the OP is planning on pulling a Toad I highly recommend the Ford 6.8L V-10 chassis or a Chevy with the 6.0L V-8. Less than that in a 24' C towing can easily be problematic. I don't need a Toad but do tow my motorcycle, {Indian Springfield - bike and trailer weigh 2,220#} in our new 6 X 10' {14' overall} cargo trailer with good results {performance, handling, mileage etc..}
My 2012 Nexus Pantom 23P {24'} does not have a slide {never wanted or needed one} but it is 101" wide with a full 7' of headroom throughout the coach. This combination works very well for my bride and I {we used to have a 68# Greyhound before she departed over the Rainbow Bridge... sigh}. Our rear queen is 75 x 60", with a quality innerspring mattress. My 67 year old bride has no issues making up the bed.
After 5 years and 51K+ trouble free miles I would not change a thing about our rig.
As always... Opinions and YMMV.
:C