So it sounds like the recommendation is to keep the lenses I have, except the duplicate 105/2.8 micro and get a D800.
The new PC will happen not because of the D800 exclusively, but because we are still using the PC I built 8 or 9 years ago with Windows XP Pro.
I am concerned if I drop $3,000 on a D800 and find the majority of my lenses have issues as I only have one newer lens. The wider primes, 28-105 and 70-300 are most likely to have issues.
Regarding the 85/1.4, I use the 50/1.4 now to get the view I want with a D200, so the 85/1.4 would do the same for me with an FX CCD. It may be out of stock for a really long time, so it really could be a much later purchase.
Shoot nature with respect and don't trample it or startle its inhabitants.