Given that your stats are probably going to be 18/18/18/18/13/8 (arrange to taste), taking Ranger just to get around TWF's Dex 15 requirements isn't really needed. Just take the feat normally and get Gloves of the Balanced Hand (18000 gp in MoF, 8000 gp in MiC) later on for ITWF (or, again, just take the feat). After that, you want the usual shtick of bonus damage to build off of your 2 extra attacks.