But, (sorry for the double post) I've got to be honest, that in the first 2 to 3 weeks, you will be very frustrated, and don't see how it could ever work. It takes quite a lot to look through that, planning is key, and the routine will come itself, I think I learned how to do a proper job with wfp quicker then trad.
Best thing is to go out with someone who can teach you a good routine, and all the right tricks, and what to do and not to do. But you need a good wfp window cleaner to tell you those. I'm sure NWH or many others who know what they are doing can tell you exactly that.