Monthly 1 BTC? You sure about that? It currently trades for $0.03, so 20 per day = $0.60 per day, making $18 per month... I'm not sure what you think the price of BTC is, but it's litterally over 100 times higher than $18...
Also, please don't say "its value up in September at least 1$". It could just aswell turn into $0.0001... Investment advice is great, but please don't exagerate it.