How many sales from 40-60 leads

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This will be generated through the doors. I will have someone helping me along the way with 20+ experience. Right now currently I am positive I can generate 1 minimum up to 5+ real estate leads through my current door knocking job. This is only working under 4 hour shifts. What do you guys think it will translate into sales? The area I live in housing market is huge. One of the best states to move too with the best economy. 

Lets say the leads on average range from 3/5 on a scale. Lets say the market is very hot(it is) and economy is extremely strong.  How many sales a month do you think I could generate? I am talking about helping them sell their home.