Just drive it very easy and top it off with regular frequently. It will be fine I did the same. The check engine light will stop tripping once you get the mix below an e50 ratio.
I ended up going with Yoko Geolander HT G056's. I was thinking about the wildpeak ht02 l, but these went on sale over labor day. Much quieter than hankooks, noticed some rubbing at full lock in reverse (running 1.5" spacers and leveled).