Caddy’s are pretty awesome, I owned a TDi (the one to get) for a while. It does drive well, it does not drive like a car – unless you’re used to really, really shit cars with incredibly soft suspension. The front is very wallowy, the rear is soft, leaf sprung and hits a bump stop around 1/3 of the way through its travel. Still absolutely fine for general bike hauling duties, was comfortable enough for a 2,500 mile alps trip. Managed to get 6 bikes in the back on that trip, iirc 4 fully built (3 of them being DH bikes) and 2 with front wheels off, with a pile of other kit too.
Normal TDi is grunty enough for most work. Want a Sportline? Buy a TDi and take it to a conversion place and save thousands.
A Maxi will be better if you want to sleep in the back of it, they are more ££ though.
Another point, how tall are you? I’m around 5’9″ and had the seat almost all the way back, much taller and you’ll need the bulkhead out (which will make things a lot noisier)
Lots of good info to be had on this forum http://caddy2k.com