I fly both -300 and -400 as FO. Landing can be difficult, because you can only flare till 5deg pitch up during landing( although you can pitch up to 6,5 deg i believe but 5 deg is our company limit), but with flaps 15 and an aft cg you will already be on pitch 1deg when you fly Va exactly. Trick is to be a bit faster then Va during landing so you have more room to flare. Or some people leave some power during flare, but I dont like that method. If you don't do this, and the timing of the flare isn't right you will have a hard landing. But crosswind landings are same as in a 172.