Best way to work a trade deal for a TJ?
 

I want to establish a price on a new Wrangler Sport at the dealer, and
then work the price on my trade (98 Sport with low miles).

Should I offer them say, $200 over invoice and then bargain my vehicle
trade price? I want to solidify one side before the other side is even
considered. But I don't want to insult the dealership either. They
have been cool with me. Is asking $200 over invoice out of line?

How do you guys do it?