Babywearing questions

Hali
I will have a 2 year old and a newborn. I know I will need to baby wear this time around. I have a Bjorn, but it's too stiff and it wasn't comfortable with my first. 
I see many recommendations for different wraps. I live in Central Texas so the weather is usually HOT, with mild winters (some days it gets low, but winter weather is usually in the 40s). Baby will just be born when winter starts, so we won't be walking etc until spring. I need a lightweight wrap that won't make baby or myself sweat. 
I've looked at the K'tan breeze but I just don't know if that's the right option. I've seen that the Moby is too thick for our climate. I just don't know what to get! 😱😖