Out of the three, I think that the cups and balls has the most potential but is limited to a smaller audience (say maximum of 50 people). The first effect is too quick -- to make it work you need it to be part of something else. Dresscode is similar -- it looks like a stunt that doesn't draw the audience in to your performance. Quick and visual doesn't work for a stage show. The effects need to have more substance to them. Invisible Deck can be one of those effects -- look up Wayne Dobson's performance of that and sponge balls and you can see how a small effect can play big. The effects need to give you an opportunity to develop your character so that at the end of the show the audience remembers you rather than some guy that did a lot of tricks.
My best advice is to spend some time on the typical magic sites such as Penguin and MJM and look for effects that interest you. Some ideas that you might like -- Healed and Sealed Soda, Fiber Optics, Sponge Balls (the Encyclopedia of Sponge Ball Magic DVD is pretty good). If you don't have it yet, get Mark Wilson's Complete Course in Magic. You could build your whole show out of that book. Another book, if you like Wayne Dobson's performance style is WD40. His tossed out deck routine and "Teach" routine are great. Don't copy Wayne's style, but use the ideas to develop your own style.