Quote from cvds16:
That's the problem: from what I read here it seems you have no clue at all what you are doing. You want do a volatility trade, yet you don't know how it works. You don't want to delta-hedge but that is the essence of volatility trading, this is necessary to compensate for your loss in theta if you are long volatility.
Maybe I totally don't understand what you are trying to achieve. If it's something else you try to achieve you better start to make it very clear because now it doesn't make sense to other people.