I agree with the above. For a crop DSLR, the 50 mm f/1.8 is not very useful unless you have need of a short telephoto, say for portraits and other "people" shots.

I'd suggest just learning your new camera well with the stock equipment. After you understand your gear, you might want to buy some new additions. For landscapes, I'd consider something wider and sharper than the kit lens. The suggested 16-85 mm would be a great choice if it is in the budget but I think it would be a waste until you have learned your camera. Many very nice travel photos have been made with kit lenses.

All of that said, if you anticipate trying to shoot indoor images without flash, say of temples, cathedrals or museums, then that fast prime would come in very handy.