I definitely plan to go back around September - October sometime, but part of the reason of going this time is to see the Mrs' sister who lives in San Diego.If it's another bad winter you'll certainly see plenty of snow - and ice, which can be tricky. But moving around and sightseeing may be somewhat constrained by the conditions.
March would be better.
Will be going Dallas - NYC - Boston - SF - LA - SD. May stick Atlanta in there somewhere as well