I ran full housing for the rear derailleur past the bottom bracket and out the chainstay. For the front derailleur, I ran the housing to the stopper in that little rectangular plastic piece under the bottom bracket and then just the inner to the derailleur. I  used a bit of the plastic guide that came with the frame to line the last little bit of the cable and hopefully keep dirt off.

Shifting has been good after getting it dialed in. The tension in the front derailleur cable holds that plastic part in, so I couldn't pull it out for the picture without having to loosen the cable at the derailleur.

I'm glad I opened it up for the picture. It looks like once of the inserts for the cover bolts is corroding so I will have to grease it really good.

I replaced the fender bold at the chainstay/BB junction with a flat head bolt to make it a little easier to get the wheel on and off.