You will still need your blanket, hot drink, chair, and hat/gloves for Champaign soccer.  Chase played for 2 years and I am still not thawed out.  I am a baseball mom.  Chase played peanut league/little league and started travel baseball when he was 9.  I enjoyed every aspect of it EXCEPT for the out of control parents who are living through their child's sporting experiences.  I am happy to take Chase across the country as long as HE is happy.  Coaches can make or break a kids experience and that is what Chase's dad and I watch closely.  Mr. Ex and I actually became more friendly because we are together so much with sporting events.  I got his dad to coach the school basketball team so it is a win/win sometimes.

Larkin's health issues are significant and so is the time spent on her.  Baseball was an outlet where he could shine and he and I could bond one-to-one.  It gave him the ability to not live in her shadow if you will.  

Larkin is quite different obviously and sports will be the way for your children and mine to connect.  Larkin will learn from playing organized sports with typical kids who will teach her skills, interaction, love, and learning to accept what isn't "normal" and from this post, you my friend are more than half way there :)