Strollers!

So for my first baby we had the Britax B safe travel system and I'm just thinking that if I do happen to get pregnant here right away what do you guys think I should do with that Britax travel system because the car seat and stroller look completely new and they aren't expired obviously but if that second baby came then I was looking at the City Select strollers so would it make sense to get a City Select stroller and keep the Britax car seat only and sell the Britax stroller alone or just get a new car seat and the City Select and sell the Britax travel system as a set??