Maddie and Dan Doug Taylor and I tested ourselves with a ten day trip on the west coast, paddling from Tofino to Hesquiat harbour and back, in 2007, prior to our 2008 circumnavigation. Well worth it. It was the first time I had really exposed myself to west coast conditions. We paddled in surf, wind and currents during the winter before the trip. Your goal is doable. The single most important thing is - GIVE YOURSELVES ENOUGH TIME. Mistakes are often made because people are in a hurry having underestimated the time the trip will take. Or they are too enthusiastic - witness our 1 day out of 42 when we made a poor decision; to launch when we should have stayed on the beach. But you do have to be able to cope with the consequences of your less good decisions (see the thread in Paddling Safety called "Swimming with a Kayak" for photographic evidence of our Bad Decision day). One of the questions you will have to deal with is, is this an expedition by father and daughter (with paternal decision making) or of two nearly equal kayakers who jointly decide on policy/strategy? I would have thought that even if it is the former, a series of "meetings" between the two of you to decide on exactly what the aim of the expedition is, and the manner of its execution, would be sensible. Doug and I actually drew up a written contract covering all the issues we thought we would face. And each of us had the complete power of veto over things like whether or not we would paddle on a particular day. I would not now go on a multiday trip without a contract - it isn't the bit of paper that matters, it is the process that results in the contract that is important.