I was a Project Linus coordinator for a few years, and I spent about 30 hours/week doing it. Unfortunately, after becoming coordinator, I had very little time to do any quilting. In addition to administrative work, delivering blankets, setting up meetings, etc., I spent a lot of time mending and washing some of the donations that came in. However, I must say that the coordinatorship was very rewarding work, and I gained skills in non-profit leadership.
How much work there is to being a Project Linus coordinator depends on several factors. The size of the local organization and the number of volunteers makes a difference. The local chapters of Linus have very little structure and have only one person who is accountable (the coordinator). It is the coordinator's responsibility to recruit, train, and delegate work to volunteers. The more successful he/she is with that, the smoother the chapter will function and the more it will grow. With growth comes more work. There is a big difference in handling 50 blankets/month compared to 250!
I believe that projectlinus.org has a section of the website addressing interest in starting chapters.
I strongly believe in the Linus mission and continue to be a blanketeer, but I am happy to now have time to make quilts for other charities also.