+1 for recommending Don't Trip Poppies. I used Bennetts for years on my LDP decks. They are good, and can be modified to be made better, but at the end of the day, they can't touch the performance you get out of the Don't Trip Poppies, and they lower your deck height considerably.
If you really want to increase the efficiency of your pump setup, just get these trucks. You will not regret it.
If you really like Seismics as a rear truck like I do, just buy a Poppy for the front, and keep the Seismic on the rear.