I've got a 25-inch Siri, that's as big as I'm willing to go in a front-heavy khukuri blade. You might want to take a look at their Tarwar -- I've got one of them too, the weight and balance are good enough that it can be used one-handed or, while your hands will be close together (similar to swinging a baseball bat), it can also be used with two (unless your hands are very large). I went on a Himalayan Imports spree for few months; I haven't counted them, but I've got a pile stacked three deep in my living room, including some of their knives (I like their gool as a Wharncliffe blade), I'd guess at least a couple dozen khuks from 12-inch AKs up to that 25-inch Siri, and five swords.