gmt,
Good line of thought. However, I have a point of worry.
For,
Sell 7650CE JUL @ 82.70
Buy 7650CE AUG @ 129.90
The Sold July CE can quickly get out of hand. A 100 point up move could make the spread unmanageable, where July7650CE would threaten to close ITM at July expiry... and Aug will only appreciate in premium, which is the reason why I do not think that the max loss is limited.
In short, shorting options in last two weeks is a nefarious task. I would be more inclined towards selling Aug v/s Sept.