Answers:-
1) Usually pilot in front, instructor/passenger in the rear although the only stipulation is solo from the front seat only.
2) Cruise is listed in the handling notes as 90kts at 2000rpm but I'm sure the one I used to fly would quite happily bowl along at 100+. Vne is 155kts IAS.
3) Absolutly the best handling aircraft I've ever flown. I suspect however that you really meant to ask about landing/Takeoff. It is also one of the easier tailwheel a/c due to the wide track u/c and a decent set of brakes.
4) It's not hard to land, just different (to a tricycle u/c) and the view from the front seat on approach is excellent. It can be a bit challenging to see anything from the rear seat with no crosswind but that can easily be rectified with a bit of side slip.