I have a 172 with the Airglass (landis) fork. I ended up putting a 7.00 on the nose out of concern for the same issue... If I was to do it again, I'd probably go with an 8.00 or not worry about it and put on the 8.50. I went to Thun Field (Puyallup, WA) to get the fork installed and the field approval as I was told by my mechanic that the local FSDO would not approve it. Unfortunately the IA who worked at Thun and had a relationship with the local FSDO has moved on. He did get a field approval for putting on a 7.00, 8.00, or 8.50 (it might also include 6.00. I don't recall).
Peruse my gallery.
Here's one of mine, in front, and Kelly's in back. Kelly went with 8.50's all around.

Don't know how to get the image to show up with the new bcp 3.0 format yet. I probably have more photo's of Kelly's setup in there somewhere.
I found the tail sits lower depending on how inflated the strut is, of course.