Actually, I think it's worth asking at this point: What do you want to do with this build? What's the central shtick? Are you looking for a leaping face-stabber? A pouncing skirmisher? I'm kind of conflicted here.
If you're looking at a pouncing skirmisher, I'd suggest looking at the swift hunter builds - scout/ranger with either a splash of barbarian (for pounce) or cleric (for lots of uses of travel devotion) gives you the TWF feats from ranger, plus a good BAB and lots of skirmish.
TWF is a good thing to have with skirmish if you can pull it off (pounce, travel devotion, etc).
If you're already opening the door to the Tome of Battle, take a look at at least a few levels each of Warblade and Swordsage. There are some excellent maneuvers and stances you can get that way, as well as recovery mechanics. If you only take Martial Study, you can only use Sudden Leap once per encounter. If you take it through the Warblade side of things, you can use it a LOT (they've got a great mechanic). This is huge. Plus, you get all sorts of pounce and other kinds of stuff later on in the tiger claw school (but then you're giving up skirmish).
Personally, when I build a big face-stabber, I did it with (more or less, this is from memory) a rogue 3 / swordsage 2 / warblade 15. Rogue 3 gives you 2d6 sneak attack, swordsage 2 (if you take it at the right time) gives you Assassin's Stance (another 2d6 SA) and Island of Blades (I think - the stance that lets you flank from any direction) when you can't get an actual flank. Shadow Blade gets you dex to damage, and the warblade levels get you tons of BAB, and good skills and stuff. It's all very, very good for damage and fun maneuvers.