Not knowing The G10 irons I cant help you much. My Starter + set I usually bump it up 2 clubs (4 iron) hit it about full (depending on wind) and let the bank bring the ball back down to the hole.
I've noticed cross winds are a coin flip as to whether or not to adjust for it. Seems like if you do it double crosses you and sends your ball anywhere it likes. Also best to not swing late, takes a lot off the shot