We plan to visit both places. We won't have been trekking and aren't just looking for a place to chill and relax. I think we could find activities to fill four nights in Chitwan. I am not so sure about Pokhara. Do you recommend 3 and 3 nights, or do you think 2 in Pokhara and 4 in Chitwan is a better idea. We'll have a driver so won't be wasting much time going between the two locations.