Yes, Austin Homebrew provides very detailed instructions so you will be set there. That being said, the instructions are still just a general guideline and your own process and desired results will likely change how your brew goes.
Since the Sam Adams Summer Ale clone comes with a selection of pretty clean tasting yeast and not an actual wheat strain you don't have to worry so much about getting overwhelming banana esters if the temp is too high. That being said, the lower you keep the temps for either california, american, or nottingham yeast will result in a more crisp and clean overall flavor. That means you should aim to do your fermentation in the 65 degree range and try to keep it under 70 for best results.
As far as time goes, you're likely looking at a 10-14 day primary fermentation and racking to secondary is not really needed or desired if you're replicating a wheat style. Your hydrometer will tell you when fermentation is done and that may happen in just a few short days, but for best results you will still want to leave it in the primary for a week or two so that the yeast can clean up after themselves and produce a better overall flavor.
Finally, you'll more than likely use the 3 weeks at room temp rule for bottling. It will probably carb up a little quicker than that but you also want to give the beer time to condition. So plan on 3 weeks for a final product, but you'll probably be trying your first one after about a week