Well, first of all, I wouldn't be a Jedi, since they're a bunch of pussy do-gooders. No, selfish as I am, I would most likely be a Sith, or maybe just a Dark Jedi. I chose blue because it's my favorite color, of course, but it would a synthetic crystal made in a geocompressor Sith-style, and it would only be my auxiliary weapon. I much prefer the "tremorblade," a modern vibro-blade update of the archaic Sith sword, a large, heavy broadsword forged with cortosis and other minerals to assist in channeling the dark side, and consequentially far too heavy to lift without the Force.
See, I have thought considerably on what I would be like as a Sith Lord: I would want to be an adept Sith alchemist and craft a wide assortment of dark side imbued swords, armor, amulets, and so forth, rather than rely purely on the Force itself.