Split Level Hip Roof Plan Help

I'm hoping someone here can help me out with this. I can't seem to figure out the rooflines for this dropped addition. Specifically, I can't seem to determine the layout on the roof plan.

There will be a large room added along with a smaller mudroom off the side. The addition is dropped +/- 8" so the overhangs will come in lower than on the existing. All pitches are 4/12. I'm not sure if I'll need a saddle to ensure good drainage.

I've uploaded a pic showing the elevations and a layout of the existing roof. http://imgur.com/QBBukIt

I've literally spent hours drawing and reworking the linework only to come full circle. I'll be the first to admit I'm not great at rooflines!

Thank you!