I'd say be happy with 0.1% and do some live better testing and hopefully improve it!
Also maybe you can generate enough commission with this to avoid the PC.
The problem with test mode is not just reduction factors, but also the fact that once you enter a market in live mode, you now affect it directly and just change the figures!
I have a trigger which in test mode shows a great fill rate and decent profit, but live I was not filled as expected because I tended to be at the back of the queue. This was not even in play!