Definitely figure out what you're going to do with it. My first was a custom order 20" Chiruwa Ang Khola. It is also my favorite, despite having bought several others. Why?
What I wanted it to do:
1.) Replace my BFK.
2.) Replace my machete.
3.) Replace my hatchet.
To fulfill these needs:
1.) Any kukri can replace other big knives. An "itty bitty, tiny" 12" kuk, still has 7-8 inches of blade, angled for better chopping.
2.) This would indicate a Sirupate or Kobra.
3.) This precludes a Sirupate or Kobra. I decided I cut far more wood than soft vegetation, so the ability to keep up with, or exceed the hatchet took priority. This indicated an Ang Khola.
I chose a 20 incher because the hatchet it was to replace is a Snow & Neally Penobscot Bay Kindling Axe, which is 18" long, with a 1.75 pound Hudson Bay style head -- a hatchet that is very difficult to outdo in chopping.
I chose the Chiruwa style because HI offers to replace it with two if you break it, and I have this Tim, the Tool Man, Taylor fascination with overbuilding and overkill.
In the end I got a kukri that can outchop anything I own outside of a full sized axe, can do everything the big knife could do, and do some things better. While it isn't as good on soft vegetation as the machete, it does remarkably well, and a change in technique makes it nearly as good.
IMO, I got lucky. My other kukris are very, very good, but this one fits me, and what I want to do perfectly.
As for carrying it, yes it's big, not real good on a belt, at least not on one that is unsupported. In a belt-and-suspenders rig, it's much better. However, I've taken to carrying it with a shoulder strap, baldric style, works very well. I can bear the weight better, and don't notice it nearly as much. I even find it faster to get into action this way.
As far as it being too big for fine work, yes, it is. But remember they come with the Karda for fine work. While the karda isn't as hard as I'd like, it does get very sharp, and is very easy to sharpen, so it balances out.