Sprint Like A Snail!
I've been playing Ivern since the day he was released, and over that period I have found that Jungle Ivern, is a LOT better than Support Ivern. However, I like to play him Jungle, with Support and AP items.
I like to bring Courage of the Colossus on Ivern because a lot of the time during team fights you're going to be spamming your Q, however Windspeaker's Blessings is a viable choice for Ivern because your main ability is your shield if you are playing like a Support. But I think Courage of the Colossus is a more popular choice.
With Friend of the Forest, his clears can be very flexible, so you can mix and match different routes if you'd like, but personally I like to do this.
Red Buff > Krugs > Raptors > Scuttle Crab > Wolves > Blue Buff > Gromp > Scuttle Crab