I think MAC has great colors in every color family (neutral, bold, etc). But I know why you have a hard time deciding on what to get, I was the same on my first trips to MAC.
For blush...I would actually recommend you try "Sunbasque" blush, I know your coloring and stuff and I don´t think you own a peach colored blush anyway, right?
Regarding lipgloss/lipstick: Maybe check out the holiday collections, MAC is coming out with lipgloss pallettes (Viva Glam I believe)...I´ll find out when our MAC stores in Vienna get them and I`ll let you know