It's good that you have it made some trades so soon.
Your problem: It takes long time to modify the 5 trades, because you use the one same connection. It is a mechanism designed by me to avoid 'Too frequent requests' errors raised by the low-level api. MetaQuotes imposed a rule inside their api to limit 1 trade transaction per 5 to 10 seconds.
The only solution now is to spawn two or three more connections the same way you did in multiple instances. But you should aware that MetaQuotes also imposed a rule to limit the number of connections logged into the same account.
I hope API version 4 doesn't have these limiations.
