For fishing live bait or chunking, the baitrunner is the way to go. The baitrunner feature makes fishing live bait much easier. It essentially allows you to have the easy castability of a spinning reel with the control of a casting reel. It is also invaluable for deadsticking baits in a rod holder.
For 25#-30# mono go with the 6500. If you are using braid you can get away with the lighter 4500 size.