Simple Trailing Stop calculation - EXCEL RELATED JOB

Hello everybody, 

Just to clarify, this is a quick job in Excel I was hoping somebody here had the knowledge to help me with. I AM LOOKING FOR QUOTES IN TERMS OF HOW MUCH IT WOULD COST TO DO THIS AND HOW LONG IT WOULD TAKE.

I have a spreadsheet that I put together to do some simple backtesting. 

The first column has the closing prices of every 1HR bar. 
The second column will have a value only if a trade has been entered (+ve if it is a buy, -ve if it is a sell).
The third column has the initial stop-loss simply calculated as the entry level +or- 1pt.
The fourth column has the take-profit value simply calculated as the entry level +or- 2pts.
As you can see a lot of trades in either direction can currently be opened at any one time.

I am trying to incorporate a trailing loss system whereby the stop is moved so that it is always at max 1pt worse than the current closing price.
So in the first example, where we bought at 81.981 with initial stop of 80.981. If the close in a few bars rises to 82.45 then I want to move the stop to 81.45.
Eventually we get to a point where the trailing stop would stop updating because of 1 of 2 things occurring. 
1) the take profit level gets hit. So in the above example the take profit was at 83.981. The last trailing stop would be around 1pt away from here then (depending on where the close was).
2) the price moves against and the trailing stop gets triggered.

I currently know how to calculate the number of rows away that the take-profit gets triggered since it is a static number I am searching for.
However I am having difficulty doing the same for the trailing stop since this number is supposed to be updated with the new closing prices (depending on if it is moving in our favor).
In the final column where I left "?" I am trying to determine where the trailing stop will end up getting triggered. Ideally, trying to figure out how many rows away from the trade entry it is.
Is there a way to use excel formulas in the cell to try and achieve this (by index() or match() or something like that) or will a macro have to be created for this purpose?

How much would you charge to help solve my conundrum and how long would it take?

 Thanks.