hummingbird - cdn key

Hi there folks
I've been out on the net, rummaging after software...I was wondering if you might be able to include the option for CDN KEY in hummingbird instead of CloudFlare? Don't get me wrong, I love CloudFlare to bits, but it is a bit pricey if you need more than the free plan which perhaps most of us who have a multisites need

thanks in advance