I'd agree with JB and thin out the slings.
Keep the wire design simple. Avoid the complex shapes initially of DMM and the like and don't go for brass or micros yet (these are fine for 2nd and 3rd sets).
Wild Co. standard wires are a good starting set. Black diamond (for me are a little too wide for shallow face cracks) maybe that's just me though.
Slings, just carry couple of 60cms and 120cms and see how you manage then add to the as you see fit (try and keep the sizes different colours).
Friends, I normally work out by finger size, I'd recommend 3 to start with depending on budget (obviously) and for ease of spotting placements, get one that fits where you can get a finger slot, one for two fingers on top of each other and then guess what...3
Don't be tempted to go for too short quickdraws and try to avoid the fully stitched taped ones, but as they've got thinner and softer this has seemed to bother me less...
A decent shop, with experienced staff will be all over this, hopefully.