Any moms who didn't get a travel system?

I don't have an infant stroller and I plan to get a grow with me car seat instead of just an infant one. 
Have any other mothers done this/are going to? Wondering how hard it will be to manage without! I'm a FTM. I plan to just wear my baby with a wrap/carrier instead of tugging the car seat around like I see everyone else. 
Advice on how not having a travel system went?