Just get a pmp kit, slap it on and go.
Want a smoother pump stroke? Sell the trilogy and buy another pump. After springs, bolt and reg you'll be in the price range of a decent prostock or something where your upgrades are limitless.
I you like your trilogy then by all means customize it. You can do what I did. Grab a dremel and some mothers polish and polish the internals, the bolt, the hammer, and the pump rod