I have the same model you are looking to purchase. As I already had the attachments I needed, my wish was small. Had I thought it through a bit before signing on the dotted line, I would have asked the dealer for two minor things: 1)add the hand grab handle on the right fender (the L3901 only has it on the left and my older Kubota had it on both stock) Little thing, but realized it was significant so I added it myself later) 2) Got mine with R1 tires and the dealer mounted the rears in the narrowest setting.Too tippy for my use, so I remounted them to the widest setting...big difference. Would have had the dealer handle it prior to delivery had I realized it.
Good luck with your purchase, and remember to post some pics. I think you'll be happy with the model you chose.