Car seat ??

My hubby and I have decided convertible car seat is what will work best for us - do any of you ladies use this one? It's one we can actually afford and it reclines which I searched all over for. Do you think it will be fine for an infant? It says 5-40lbs for rear facing.. I'm a FTM and never considered convertible car seats until reading into them.. So I'm kind of clueless.