I need an indicator/EA based on EMA's and Aiken Ashi bars

One of the strategies I use manually is noted below.

MT4 is new to me but looks like it can provide an audible/visual notification of my signal - and then potentially automate the execution and order management.

This is a relatively simple set of rules and may even have something already set-up :-

Generally I'll trade intraday instruments with the lowest spreads during their usual market opening hours, I use 1 to 15m Aiken Ashi bars and 3 EMA's - generally 10, 30 and 100.

I'll consider opening a long position if:

1. All 3 EMA's are higher than each other and sloping upward
2. One or more bars then falls below the 10 and possibly 30 EMA but not the 100
3. A subsequent bullish bar is formed that has a flat bottom* below the 10 or 30 EMA but a high and close above the 100 EMA.

A short is exactly the opposite.

*Please note, the Aiken Ashi bar is not necessary, all a that matters is that both the open and the low are below the 10 or 30 (but above the 100) and the rest of the bar is above the 10.

I've attached some sample images of correct/incorrect situations.

I require an audible notification with an indicator on screen when the above is true - I'll run it accross many assets at once.

I'd like to be able to vary the EMA lengths and market opening hours.

I'm assuming that if I want back test this (but not necessarily fully automate it yet), I'll need to provide parameters for opening and closing trades? If that’s the case then an opening order of n*ATR with a SL and TP of the same (where n is definable individually).

I'm new to MT4 so will need assistance in setting this up and understanding the parameters, your patience will be appreciated.

Many thanks