If you're OK with that SWCG then great! Just a warning about copper. Maybe it was from before Intex added the copper ionizer feature.
Perhaps the green is from the fill water. Was the pool fill water treated the same way as the household water? Is the inside of your toilet tank discolored?
You'll need stabilizer in your pool, you can add it as CYA granules (in an old sock in front of the return) or you can manually dose with dichlor for a while - your choice.
Sorry I didn't notice that you'd already ordered the K-2006. Good choice, I love mine.
Pick up an OTO kit so you can measure chlorine and pH while waiting for your K-2006.