I hate to be the stickler for details guy, but I feel like I should point this out. Historically, the blades of long swords were a little under four feet, and the most they weighed was about 4 pounds. You can see that
here, and a few other places across the web. So, a four foot long blade would only weigh maybe four and a half pounds at most. I understand that it's magic, and its weight is supposed to be different from a normal sword, but 62 pounds for four feel of reach is more than a little unwieldy. Then fluctuating 40 pounds? Absolutely obnoxious. With a sword that size, changing only two pounds in weight would be MORE than enough to change how the weapon feels and handles. Well, if it weighed the 4 pounds one would expect it to at least. And I say this as a sword fanatic, and one who has done a bit of swordplay myself. But, all of this is just if you want to be factually accurate. If you want the main enemy to have a 62 pound sword, go for it. It's your RP after all. I just thought I'd throw that little bit of fact out there. As a little side note, I love that he'll use a halberd! Halberds are one of my favorite weapons, just because it's so versatile. Thumbs up from me on that one!