The Killer Bee gold weave isn't exactly lightweight. I'd say it's midweight. It's definitely heavier than a Shoyoroll Americana. I have to recommend GCFG and CTRL lightweight golds. If you're just looking to buy any gold weave, Killer Bee is the way to go. I have a Scutellata in blue and it's a great gi.
As far as the Ligustica from Killer Bee goes, I actually prefer the short skirt. I know a lot of people don't like it, but it fits great on me.