Good mileage! About your hips, you could perhaps visit a chiropractor about a pelvic tilt? I used to visit one frequently when I ran competitively as a teenager. It's expensive, but absolutely worth it!

My only tip for the hills are to shorten your stride length, even run flat footed if you already don't. It helps me to concentrate more on cadence rather than powering through the incline. I don't hit a lactic wall when doing it like this and I'm left with enough energy to complete a run.

After a few years out and 15kg gained, I started running 3 weeks ago to get back into shape. I feel your pain, it takes so long to recover now! I'm targeting some 10ks next summer though :)