Hello,
I specialize in MT4 development, and I can backtest and optimize your Forex EAs (from 2013 to date).
I will use tick-data for high quality testing, and use full-range optimization, half-range optimization with walk-forward testing (e.g optimize for 2012-2013 and see how those parameters performed for 2014-2015 etc).
Looking forward to work with you,
Adi