D5100 without kit lens - 35mm f1.8 instead? Dumb idea?

I'm pretty much certain to get a D5100 (best bang for the buck around here) but would like to consider a non-standard approach to buying glass... instead of the 18-55mm kit lens, I was thinking of getting the 35mm f1.8 as the first lens. Reason being most of the initial shots will be portraits (twins arriving soon!).

Moving forward I was considering getting a more versatile 18-105mm as a travel all-in-one.

Bad idea?

Background:

• dSLR newbie; using a bridge camera now. Used an SLR waaay back in the film days.

• other than the upcoming new subject matter, will be using this mainly for travel and events.

• budget constrained.

TIA!