Wheel size in correlation with drop amount.

[CSoliz]

Hey all. I have a few questions I am not sure about. I have a 66 I plan on doing a 6/7 static drop on. My plans are 3" springs and 3" dropped spindles up front. 6" springs and 1" blocks out back. I am sure the rim diameter would not be to much of an issue out back, but I am sure it will be an issue up front with the drop spindles. Soo.....

What is the minimum size rim I might need up front?

With this size of rim, how many clearance issues am I going to have in the wheel wells front and back?

Would I be able to do a bigger spring drop with out effect the geometry up front too much? In turn reducing the spindle drop and reducing rim clearance issues?

Thanks for any help anyone may be able to provide.