If you have the storage and can manage a hard board on and off the car then go hard board, previous posters have given good examples and there are plenty more boards in the 9'6-10' size range to choose from for someone your height & weight.
My experience with Mrs Cartoon (about same ht/wt as you) was we started out with 10' hard board (Naish Nalu) but she has a dodgy elbow so was always worried about getting it on and off the car on her own. So we sold the Nalu and bought her an inflatable which she is very comfortable on (but guess who gets to do the inflating

)