Your internet connection is better and more stable (both with staying connected and for keeping the same average speeds) than mine, so no complaining about lag, unless it's from the lack of a graphic card or bad cpu/ram.
Rushing is fun. Except when you fail. Essentially for me if I Zerg rush...
Zerglings (8pooled) - IF FAILED - Mass Roach - IF FAILED - Mass Muta - IF FAILED - Brood Lords-Corrupters-Infestors-Roach - IF FAILED - You lose.
Usually the breaking point for me is the mutas though. If I can harass enough and/or they have no decent AA, then they're screwed. Otherwise I'm screwed 'cause they have excellent AA and I just wasted a tonne of gas on pointless units. :/