Driver first ... the extra yards off the tee make everything else easier.
Wedges ... better wedges with some spin will give you more reasonable putts.
Putter .. the more precision the better. Don't look at just the meter speed, you need the ball to go where you hit it.
Then think irons ... again, precision is king.
If you look at full sets, I'd still say go for precision. I used Raptures for a long time ... slow meter, easy to hit ...but expensive. The switch to G-10's was night & day ... little harder to hit, but when you hit it, the ball usually goes where you aim.