upgrade ninja 250 636

Okay so I have ridden my 09 ninja 250 for a few months and am still very much so a beginner even though I've learned so much. Recently I was offered a partial trade, my bike and 1000 cash for this guy's 05 zx6r with 13k miles. His wife wants the ninja. He won't budge from 1000. I'm only 17 and...