I have the JT Gloves. They cost about $40, but they work great. Just remember to wash them in cold water before you play because they will stain your hands black for about 3 days. I learned that the hard way.
About the cup, not that protecting your gones is not a priority, but a cup will be very uncomfortable especially after a full day of playing. Plus, the majority of hit you will get will be upper body. So make sure to get head protection. I recommend the Zel hood. It's $30 but well worth it. I've gone to work so many times with paintball hickies and welts on my dome. I used hats and bandanas, etc., but the hood protects the best and it looks bada$$ and will match your urban setup. The link is www.zelpaintball.com
I can't find any other hood with padded protection.
As far as the harness goes, get a good waist harness, but don't worry about a chest protector, unless you are a girl or have man-boobs. If you leave yourself open enough to get hit in the chest you deserve it. Plus you will have a souvenir. My girlfriend calls my gun "the other woman" especially when I return with good sized welts. Chicks dig Scars.