Congrats!
A car seat carrier is the bomb when they are that young to 2ish and they are a little sleepy and you have to watch them. They can nap, you can pack them around with you to get things done and keep an eye on them. Never wanted to be way out in the garage or outside too far when they were that little without knowing what was going on. Mine were before good long range monitors and cameras so you might be able to go that route!