hello. i live in brazil and will travel to US for business and figure out that would a nice chance to buy hardware for a cheaper price than I can get in brazil. i have intentions to buy the following as a start: Audio interface: M-Audio Fast Track Ultra [290$] Monitors: M-Audio Studiophile BX5a Deluxe [240$] Microphones: Audio-Technica Pro 37 [120$] or Behringer Studio Cond. Dual Diaf. Mic C3 [53$] Memory: 8GB DDR2 RAM Memory for the computer (only have 2gb) 1-Does that make sense? Is it a good hardware? 2-Is computer memory really necessary for better performance? 3-Should I buy headphones for mixing? when would I use the monitors, and when would I use the heaphones? (I currently have a koss porta pro, and a koss the plug). I would like to record voice, acoustic guitar, electric guitar, bass guitar, keyboards, etc., and start learning the basics of music producing, mixing, etc. Thanks!