Thanks for reading my post :)
I wrote about my decision to make the jump in a previous blog post:
http://blog.keen.io/post/26096112831/why-i-left-consulting-a...
Some things to consider: 1. Consulting work is still there if I need to return to a higher salary. 2. My salary in the startup will be adjusted if the startup does well. 70k will not work out long term in SF, but it's ok for a year or so.