I would invest in a Centaur 10 speed FD. You didn't mention what year and model of 10 speed shifters you have. If you have 2011+ powershift levers, they will be very limited in trimming ability, but if set up properly, you should only have to use one trim click when you're in the little ring.
If you have ultrashift levers, or pre-2009 shifters, then you have many more clicks available, but you should never need more than four and a prefect setup only uses three clicks. The need for trimming should be minimal. Typically, you might use one click when you're on the big ring and trim the FD to the left, when using 2-3 of the largest cogs. From the little ring, you might need to trim the FD to the right, to use the smallest 2-3 cogs. You should never use the two extremes - big/big or small/small.