If you're freeform and planning on using powers that do physical damage (crushing, slashing, piercing) then I can't recommend Quarry enough as your passive. It gives you dodge and avoidance directly rather than giving dodge rating or avoidance rating like way of the warrior and lightning reflexes do. Which means it's not affected as harshly by diminishing returns. And those diminishing returns get pretty harsh at high levels of dodge. To the point that Quarry + parry w/ Elusive Monk + dodge mods slotted into your gear is only slightly less than you end up with using lightning reflexes, with the added bonus of doing much more damage.
It should also be noted that claws on its own isn't a very good set, because it lacks the aoe you're going to want for clearing out packs of minions. Most of its single target attacks aren't much good either. In terms of straight up damage per second you're probably going to get the most out of just spamming Dragon's Claws constantly.
As freeform though, there's nothing stopping you from taking aoe powers from other sets. And since Quarry doesn't care about ranged or melee and buffs all physical damage equally, you could take something from force, archery or munitions for your aoe. If you want to stay in martial arts there's Shuriken Storm, which is a pretty decent pbaoe which if you take an advantage on it will give you extra dodge and avoidance while you maintain it. You could also take Eye of the Storm or Sword Cyclone from dual blades. Eye of the Storm particularly is a good power if you're taking hits, which as a scrapper type you likely will be, because it gives damage absorption while maintained AND it counts as melee for triggering Parry's Elusive Monk advantage for the extra dodge/avoid there. Does kinda violate the 'claws/SR' idea though.
Also, as a melee character I highly recommend taking a lunge power, probably Thunderbolt Lunge since you're martial arts, and taking the Nailed to the Ground advantage. Normally it's more of a pvp thing but on a melee build it's also useful for knocking flying mobs out of the sky so you can hit them.
Also if you're looking for a dodge build, Bountiful Chi Resurgence with the Resurgent Reiki advantage is an amazing self heal because it'll give an extra heal every time you dodge over its duration. And it's a 15 second cooldown, rather than the 90 seconds of Resurgence.
Consider Evasive Maneuvers as well. When ranked up, you gain 24% dodge chance each use.
Worth noting it also flings you backwards, out of melee range. But hey, sometimes that's a good thing. Devana Hawke and her 'oh you're melee? Well screw you then' gas arrows comes to mind. Being able to leap backwards out of stuff like that is pretty useful.
