Hi end Scalping indicator & sound risk

Hi guys, I am desperately looking for an mt4  trading strategy fo anyone who has it or can develop it that has any combination of indicators but with risk parameters and time frames outlined as follows ;  a scalping strategy working on m15 and m30 charts for mainly indices and commodity assets trading. The reward to risk ratio 1:1.5 or better(I.e 1&half reward for every 1 risk for all opened trades as default). Accuracy hit rate of strategy for the trades it opens(considering the above parameters) must be at least 70% then include a detailed explanations of the market conditions in which strategy works i.e during volatility, economic news releases etc also the entry/exit criteria and were these work efficiently i.e in a trending/ranging or volatile market. Respond with price quotes, am open for negotiations