Well long story short, I turned it down. I don't have the space or money for a tank bigger than what I have, and I can't put it in my pond even though I live in phoenix because i've been dealing with an outbreak of soap/detergent in the pond. and I'm not going to risk this beaut in there. It might be okay in my 300, but would still need a bigger tank. So while taking it would be slightly better, I'd rather it go to someone with a much bigger tank OR after speaking with the owner, he's looking at getting a 550+ custom built, so he might just hold on to it.
Plus the wife gave me a huge speach about willing to spend $150 on a fish but not willing to spend $100 on a doggy door for our sliding glass patio door. it's not worth that argument. happy wife = happy life