I think you are still yet to read a few books on trading options.
1) vol trading Euan Sinclair
2)Robert Rebenato volatility and correlation.
Everyone wants to be long "cheap" gamma/vega. Figuring out that selling stock and buying a call = a long straddle, will not make you money.
Ps. I think you have it a little mixed up. Its selling stock and buying calls, not buying calls and buying stock.
Also keep in mind, short dated options you are trading gamma -> implied/realized. When you trade options +2 months, you PnL is more effected by vega -> implied/forward.
GL