The Boil: Yes, I would do a longer boil, but you are going to have to adjust your recipe accordingly. I assume you are doing extract, so be sure to account for the extra evaporation and add extra water. Also, do not begin adding hops until the 60 minute mark, the same way you would normally. If you are doing a 90 minute boil, which I would recommend to start with, add your 60 minute hops after 1/2 hour of boilng, and so on.
Fermentation: Yes, keeping it cool for the primary fermentation, and then storing warmer is fine. The real danger zone in fermenting warm is the first few days, during the lag phase, and active fermentation. After that, the yeast are just cleaning up after themselves, and will give off little or no undesirable flavors or alcohols. I actually do this myself many times, and I seem to notice a better floculation rate.
Bottling: Yes, let them condition warm. You actually have to do this, or your beer will either not carbonate at all, or take forever.