For versatility, I would go with a 500 or 600 and run it the way you are talking. Lots of times in the season, lots of kings are below the capabilities of a 450' copper. My 500 was my go to copper last year. If you want to stick with the 450, you can add dive bombs to it and let extra line out. As for pulling it when making turns, if turns are made slowly, it should not be a problem.