Change your running plan to all
HIIT. Do it 7 days a week if you want (although probably shouldn't). Also be sure to always do
HIIT after lifting if doing both in the same day.
Keep doing your lifting 2-3 days a week. You need to implement lunges and squats into your routine. The energy your thighs can burn is priceless and not doing a large amount of squats will leave you without real functional strength.
As for diet, just make sure you are keeping up your protein, and try to stay away from non-whole grains and simple sugars. Fruits and veggies are your best friend.