I have combination skin too, and in the winter, my cheeks and chin do the same flaking thing as your nose is doing. It hasnt been so bad for me this year; I've worked out a pretty good system for myself:
Skincare
1. Wash with gentle cream cleanser (Kiehls Gentle Foaming Cleanser; the name is a total lie since it doesnt foam)
2. Moisturize (Kiehls Ultra Moisturizer w/o SPF)
3. Exfoliate once a week; more than this irritates my skin and causes even more dryness and flakiness (Kiehls Gentle Buffing Cream)
4. Gel based mask once a week (kiehls soothing gel masque) This stuff smoothes out the flakes, and calms any redness/irritation in the dry areas
Yeah, I love kiehls skincare. I live in the middle of nowhere too, but I order off their website; their always having free shipping codes.
Makeup:
1. Moisturize, wait 5 minutes
2. Prime skin (I like NARS primer; it's seems thinner than say Smashbox or MAC's primer, and doesnt irritate the skin. Really gives the concealor something to hold on to.) Dont need to wait for this to soak in.
3. Conceal using liquid concealor (Prescriptives Camoflauge Cream)
4. Oil Based Foundation (this is so key, I was very very reluctant to try Oil based, since my skin is super sensitive, but this helps a ton. I use NARS balanced foundation)