IIRC, he didn't seem that motivated. He translated a decent sized excerpt of the first chapter to gauge reactions. I think he said he'll do some more if he felt it was worth doing.
The thing is, the LNs are written in a format similar to Haruhi. The anime didn't cover most chapters, but selected a few thought volume 1-6 and put them in order. So, I think starting from the first volume seemed like the right decision.