Need help with Sejuani Builds

I'm a player who's not yet lv 30, and is planning to main Sej Jng when the new update hits. Currently, I'm a jng and sup main who isn't the best at building efficiently. I just wish to know what first few items that would be optimal (Other then rushing Cinderhulk as we all do...) as well as some of the scaling for the health (in order to use warmongs). So, Op.gg says that the highest winrate for Sej is to rush Cinderhulk into a Warmongs and then an adaptive helm. I wouldn't prefer using adaptive helm, (as I would prefer a early Deadman's plate, or a Gage) but would the early Cinderhulk and Warmong's be able to proc Warmong's Heart? Would going Deadman's plate and then Warmongs be more effective? Also, is starting blue jng into red the best way to start if you have a leash? I wish to know what level ganks would work the best on Sej and which of the new runes would be very effective on Sej. (I'm personally rooting for Aftershock) Thanks to all those who answer, and all opinions are valued. Please explain why you would choose the items you have recommended, or the clear path. ;) Best of luck on the Rift!