Hi Bobcat
At this point, planning to overnight in Republic on Friday night, and then down the Grand Coulee, then likely I-90 to Ellensburg, Yakima, Hwy 12 to Randle, CR25 & 90 past St Helen's Hwy 503 to Battleground. If we make it past Republic, then we might go to Wenatchee and take Hwy 97 to Ellensburg, and avoid the I-90 thing. This is preferred, but it is about an hour longer, so depends where we overnight.
If you and Red are taking Hwy 20, or 2, then coming down 97 we could meet up in Ellensburg. I'll text you an ETA once we're underway on Sat morning. Likely somewhere between 12:30-2:30 PM. We could have lunch and wait for you...it you get going!!