Just to answer a few of your questions:Benching is not important for Oly lifting in fact it is counterproductive due to fatigue, flexibility, time, etc. you only have so much energy and so many hours in a day, dont waste any on bench if you want to oly lift.Same goes for shoulder pressing, not really applicable to oly lifting as the jerk comes more from leg power in the dip and drive. standing press or push press is an assistance excercise that you could do in conjuction with a proper routine.When starting out you should be focusing mostly on doing the classical lifts (snatch,C&J) under the watchful eye of a coach. Also do some pulls and squats. But no bench press or bicep curls if your serious about O-lifting, there is too much that needs to be done that is directly applicable to O-lifting.I am certainly no expert, im just giving a bit of advice, I have only been O-lifting for 1.5 yrs.