Is this an Ib Kofod Larsen lounge chair?  

It looks sort of plausible. But you are absolutely right to be skeptical of unsourced attributions. And this one is particularly untrustworthy, because there isn't even a maker attributed.
There are also dozens of other designers who could plausibly have designed the chair.
I don't think you are going to discover who designed it very quickly, but I would spend the extra money to get it done very well because it is a nice chair. If you don't, and discover in a year or five that it is a moderately famous designer you are going to wish you had done it right and want to do it again and that will cost a lot more.

Thank you for the info leif, do see any elements that remind you of a designer? I'm really not too sure where to start looking. I've searched every Kofod Larsen source but no luck - just classified for the same chair in Oak, and the one listed in this thread in rosewood.