Good luck. From what I hear, if you don't speak french while in Quebec (Montreal and Quebec City), you're an outcast. My wife almost got arrested there for causing a disturbance - she was stopped from bringing food to her mother while at the Montreal airport. My wife got pissed off because people were yelling at her in French.
From what I've heard about Quebec, I don't want to go visiting there
Completely disagree. I live in Quebec and though I'm trilingual (English, French, Spanish), when I don't feel like speaking French in stores or restaurants, I don't. Quebec City will be a madhouse of tourists in July and August. I was there a few months ago, with visiting German friends, and we spoke English exclusively. If you visit small towns off the beaten track you'll probably find fewer English-speaking people, but I doubt you'll have time for that if you're planning on getting across the country in two weeks.
Before hitting Quebec City, stop at Tadoussac, (http://www.tadoussac.com/newsite/tourismeeng/accueil.htm) (notice the website is bilingual, English and French). Go whale watching, August is perfect timing.
While in Quebec, visit Montmorency Falls. For the hardy, there's a path up to the top (it's higher than Niagara), for the non-hardy there are cable cars. (http://www.rtsq.qc.ca/quebec/dc012.htm)
Montreal is very English-oriented, and all tours/hotels/b&b establishments, etc. cater to English-speaking tourists. However, I enjoy trying out the language of the country I'm in when I travel (although my Czech is horrendous ), just for the fun of it. People always appreciate it (as you would also, I'm sure) when others make a bit of an effort to speak their language.
You may hit some of Montreal's many festivals at that time, perhaps the Just for Laughs festival (I don't know the dates off hand). Last year many of the acts were in English only.
BTW, on the street where I live, the neighbours to my right, left and directly across the street are all English. Although the breakdown is 33% English in my neighbourhood, most people are bilingual.
If you or others in your party are the religious type, there are cathedrals, basilicas and places of pilgrimmage all over the province.
The Botanical Gardens are one of the largest in the world (I'm a member and have taken several workshops there), and the Insectarium is kind of cool ) (http://www2.ville.montreal.qc.ca/jardin/en/menu.htm (again, notice the link is the English one).
Any other info on Montreal, just pm me.