Over all drive-ability and maintaining a good level of fuel efficiency as well as power should be considered. Look for gains over the entire rpm range not just peak Whp.

Hondata+ecu - $700+
Tune - $600+

go and service your motor with a nice synthetic oil, and look into some long tube 4-2-1 header if you haven't already bought the x-force unit yet.

Look for numbers around 115-120wkw, and 130+ wkw on higher reading dynos. Then take it to the 1/4 mile and post up your results for others in the same situation to gain knowledge.