The stock wheels are in rough shape. $150 ea to sand blast, turn, and coat, so I might as well get new after market  wheels. What are your suggestions ? Do I stick w 14x6 or do I go bigger, and or wider ?

Losing 4” of ride height can mean you’ve also limited your options for what wheels and tires will clear. Put the car on the ground with stock wheels and work from there.

Oh that would be entirely to easy. Thinking  I could clean up those 45 year old wheels myself was unrealistic at best and only AFTER I had the dry rotted tires taken off. did I discover this...alternate reality. Called a soninlaw that used to rebuild wheels to get the low low. Sandblast, turn on lathe, powder coat clear. I got a tire machine (manual) , a glass bead machine, I got 2 lathes ! Wheels won fit in either one, and it was easier for $20 to have tire store take them off. Given  that  and that I figure for me to clean and polish them will take about 8 hours each. To send them out about $150 ea. To replace them after market about $150 ea. NOW you can see why Im going about this this way hoping someone out here in cyber Z land has dropped theirs w Tokico springs and struts and has a really great custom street   tire / wheel set up. And now you know the rest of the story.