Nearly everyone will recommend the Cleveland wedges because they're very good - but they're also expensive. If cost is no object to you, get them and you're all set for a good long time.
If you want cheaper wedges "for now", until you've gotten to a point where you've accumulated enough credits for the more expensive wedges, the ATV/Gorge wedges in the L39-42 range present an excellent value, IMO.
Your driver is fine - most people here end up playing that one for quite a while. If you want a little more length, higher trajectory, and a slower meter, then the Cally that unlocks at L85 is a good choice.
Ditto the 3W; the Cally that unlocks at L86 is a logical "next step" from what you re currently using.
In my experience, from the Legend tees, the little bit of extra mustard from the slightly longer driver and 3W comes in handy.
Your irons are fine and should serve you well for a while.
Same goes for the putter; if you like it, stick with it - as in real life, putters are pretty subjective - once you find one you like, there's no shame in continuing to use it. One of the highest earners in WGT history uses the L55 Daytona.