If you’re taking Vit D, you should always take K-2, specifically for reason #2 in your post.
Good article on 10 benefits of K-2:
https://www.nutritionadvance.com/vitamin-k2-benefits/
I take 200 mcg/day (150 of MK-7 & 50 of MK-4) and 5,000 IU of Vit D3.
After surgery in March for a broken kneecap, I was researching diet for healing bones .... Vit D & Vit K-2 were on the list, plus lots of protein & I added some other supplements I thought would help. My Ortho commented on what a “speedy healer” I was and I have no doubt what I was eating/supplementing made a huge difference.
I am already taking 5000 IU D3 for winter, somewhat less in summer and times when I am outside. Last Dec. annual physical my D reading was 66 ngm/mL, midway in Kaiser Permanente’s Optimum Range of 50 to 80 ngm/mL. Will ask for the blood test at my Dec. annual physical.
I am also concerned about K1 and the inflammatory issue. I have allergies and take from 4 to 7 grams of Vitamin C a day and still my nose gets clogged as it is right now. Will pop a 1000 mg C as soon as I finish writing this. Does this mean I have inflammation?
What is this MK-7 and MK-4 you mention here?