recently bought a Lowrance elite 5m baja. I see that maps are available for different geographical areas for different prices. One offers the entire U.S. For $99 ( I think called fast tracks), while they also offer the U.S. West or East for $99 each. Can I just get the entire USA, or do I need the more detailed east or west? I ride Colorado (Taylor Park), Arkansas, Oklahoma, and Texas, so if I go with the more detailed maps I need east and west.

Any advice on Lowrance maps is appreciated.