Definitely get the Lvl 59 (or 60, w/e) G10 Irons........best $12 you'll spend and they'll last quite awhile. I didn't check your wedges, but since the PW in the G10s goes 115, I'd go for a 100/80/60 (or thereabouts) wedge combination.
I would spend a little more at the outset, especially if you're planning to stick around, b/c you'll get frustrated by a bag full of starter gear quickly. If you need a cheap ball, there are several good ones, maybe something from the "GI2" Series depending on what you like.
There's no "unlocking" courses, but not all of them are available in all modes of play.