Hello, SAFLYFISH!

The Horizon is a great rod. It's very powerful, so it'll cast either line you mentioned.

If you're going to be making longer casts, I'd stick with the WF4 line for this rod. On the other hand, if you're making short casts, the WF5 will load this rod easily.

This is a fast-action rod and it's great for big water and fishing in windy conditions.

See ya,

Fred