I really like the graco modes for all of its flexibility my husband cant stand the 360.00 price tag for the set. so when I went hunting for a better deal I realized my baby who will be born in this "lovely" Wisconsin weather in the beginning of October. I will try using a mobi wrap and the baby carrier on my front for the first couple months (I'm not the strongest). But for those mall trips I am considering buying a graco carseat for a little more then 100.00 and a used frame stroller to go with it for about $30-50. My thing is by the time I start walking around with a real stroller I may want an umbrella stroller or something used don't care the brand instead of a travel system. Is it crazy I think all of these things out?
Re: stroller/car seat
Once DS was about 6 months, I did buy a jogging stroller/all terrain stroller (which was expensive but I got it at a bargain store for like 1/2 off). You can find great stroller deals on Craigslist, so if you start out with a cheap frame, you can "upgrade" later for a stroller that will better grow with the kid.
Planning it out is important and the snap and go strollers are a great alternative to travel systems, but from personal experience be prepared to have to switch your plans up once your LO arrives. My DD hated being worn so we used our travel system (Chicco) all the time. We have bigger vehicles though so space wasn't an issue. I'm really hoping DS is more cooperative with wearing because I'll need the free hands to chance his sister around!