An EA or script for forex market order execution...

I'm not a MT4 expert and don't exactly know the language for this kind of thing, but I'll describe exactly what I want and let you experts show me what can be done.

I'm looking for a very simple order execution EA or script that allows me to execute market orders (long or short) with the following features:

1. A client side stop-loss order set by user input as an exchange rate value (no pips). This should be a "stealth" order...I don't want market makers or brokers to see it;

2. A toggle that allows me to change the current stop-loss order to a trailing stop-loss order;

3. A toggle that allows me to change the current trailing stop-loss order to a regular stop-loss order;

4. A "target" line that will notify me when its value is reached by the current exchange rate bid (I'll manually set the target as an exchange rate). It should notify me by text message, by email, and as a screen message. The screen message must be closed by me and will say something like "Target reached. Re-evaluate your exposure in this trade." The target should show up on the chart as a line. I'd also like to be able to change the color of the line and give it a text title.

5. I will need to be able to set the lot size.

6. The EA or script should sit on the chart with a "Buy" and a "Sell" button. If you can have all of the inputs on the chart along side the buttons that would be cool, too.

It should, when the button is pushed, execute the order and set the (stealth) stop-loss and target notification line. It should execute the stop-loss order when the bid (long trades) or ask (short trades) match the stop-loss value. I want to be able to toggle the stop-loss to a trailing stop and back again. I also want the EA to send me a message (text, email and screen box) when the target line is hit by the bid price.

Attached is my artistic vision of what this may look like. Nothing fancy, and not too big.