nomis5 - 8:51 pm on Dec 9, 2012 (gmt 0)
I have four mobile friendly versions of my websites and the conclusion i have come to is that it's not necessary to convert all the pages in one go. Try to do you ten most popular and judge what the result is.
For my two main site though I have redesigned the layout completely - what suits a PC does not suit a mobile. But again, do a small sub-set of popular pages and go from there.