Hey, I have been trading many system with amibroker over the past 5 years and I can safely say that I know pretty much all the limitation / work around of this program. I programmed/backtested over 5000+ different systems over the years. Your description is very large an I would like to know what exact kind of pair trading you want to test. Is it on the stock market or on the futures market? if you have some sort of description I would love to see it so I can give you a better quote and see if amibroker is capable of testing it ( it is not super straight forward to test pair traiding strats on Amibroker ). Just so you know I have a Bachelor degree in Actuarial Science and a master in Applied Finance. I am also a CFA chartholder. also I have skype and would gladly talk with you on the project to be on the same track. I speak english and french. Good luck on you project!