Welcome to the 7 world...

RX007CYM covered everything pretty much. I'm an FC kinda guy myself, if you have any questions that you can't get answered on RX7club PM me. I'm jobless right now so i have alot of free time

Anyway, Apex seals are weird really, you think at high RPMs they would "pop" but the N/A's can last a long time if you take care of the car. And yes, you do want to high rev it somtimtes, not shift buzzer high, but to like 7k when it is at peak hp, this just helps eliminate carbon build up. Don't sit in your drive way reving it either, get out and let that 7 fly. Within speed limits though!

Try replacing your spark plugs and wires, see if that helps the idle. Be sure you put the leading and trailing plugs in right too.

I personally use Mid-grade fuel, and 20w-50 oil, but i switch to 20w-40 in the winter months.

I don't really know what else to tell you, i havent seen the car in person. Hope this helps atleast a little. If you have any other specific questions post em, or you can PM me.