If you want a higher GVWR you will need to find a C with a tag axle. Thats what gives the A class there bigger weight capcity. Most C's only come with a dually set and NO tag axle about 75% of A's come with tag axles.
My C will hold all 71/2
of us on a rainy day quite comfy. The veiw out the front is not as large as it use to be with the A we had BUT the view out the table window and the couch make up for it.
I would suggest however make sure you have some kind of back up camera either factory or DIY installled it makes a big differance when you back these BEAST up.
As far as repairs I have done them on both and they were both setup by someone who would NEVER work on them
. That being said they are both very packed in some parts are easy to get to while others you need to be houdni to get at
. Getting parts is a whole differant ball game if you get a DP you won't be able to just go to O'reillys and just pick them up if they can get them they will have to order them.
Now before the A's start yelling at me for being a traitor I drove my A for 6 years and put 20000 miles on it. Loved it in the end it was to small for my GROWING family and was 31 years old.