Thanks for the build tips! I have no talent for figuring out builds, and often forget that I can look them up.
I, like a nimrod, only recently started using Infinity Edge. It has made my Trist games a lot better.
Also, the Force of Nature came from the notion that it would be best to focus a good bit on movement speed, while still being a little less squishy. Movement speed isn't that important, so Banshee's Veil sounds like a very good option. Ionic Spark was an impulse buy; I can't resist lightning. Maybe I should play Kennen.
Black Cleaver I have seen before but never really used or looked into. I will be certain to check it out.
However, I don't think I like guardian angel. If I get killed, it's most likely that the enemy will stick around and I'll die anyway.
I think it's also probably good to mention that I, to begin, get Explosive Shot, as it's useful for poking at low levels as well as farming. Rocket jump I usually focus on immediately after. Slowing enemies and hopping all over the place can't be passed up.