Metatrader 4 EA Coding

I want to get a Metatrader 4 EA written. Fairly straight forward but additional inputs welcome from experienced coder. Brief is that I want an EA that will run on multiple time frames and all types of security (i.e. forex, CFD etc - subject to platform it is running on). Want to have a number of variable inputs such as: - Security type - Moving (Simple) Average Value - Contract Size - Spread (important because different securities=different spread) - sell target (limit) - stop loss trigger (x points behind the market) - stop loss #number of contracts - stop loss #limit The crux of this is a simple MA - if close of previous completed bar is below the xMA then buy on cross plus 1/2 spread Reverse if the close of the previous completed bar is above the xMA - then it is a sell on cross plus 1/2 spread. The second aspect of this EA is the exit - either at the limit or alternatively a stop loss running (VARIABLE) points behind the market. If the market is long then the stop loss will trigger when the market falls (x) points behind the highest price. At this point, if the stop loss triggers then it will close out the open position and open a new position for (x) #of contracts with a new sell limit. All orders are to be good to the end of the current bar - i.e if it is a daily trade it will only be active for the one day and then cancelled. If it is trading on a four hourly bar then at the end of that period it cancels and on rollover of completed bar a new set of data entry points will be set. Thanks.