You should play the original. I dunno how old you are, but depending on your age, you will either love it or hate it. I'm 17, and absolutely love it; it's the only game my mom knows how to play so we have a great time together on my wii. I really hope it comes out for 3DS Eshop, because the only games i have right now on my 3DS are Ocarina and Link's awakening.... lol
I suggest finishing up PH and ST. They're pretty easy, and will be a nice start to achieving your goal. After that, I think you should beat the ones you have started already; then complete the others start to finish. But it's your decision, not mine.