SheryarAdam: Wedges - seem ok, although I have very old cheap ones, not sure about this
This is where you need to immediately upgrade. Everything else you have will serve you well but your short game is essential to decent scoring. Moving to Legend took away your driver/wedge game and turned it into a long iron game, specifically the 3, 4 and 5 iron shots.
You're looking at longer approaches now with the longer irons and you're not going to hit every green, every time. This is where good wedges will get you up and down for saves with occasional hole outs.
3 matched wedges is the ticket and then learning pitches, punches and chips with them is what will make you competitive. :-)