Mate, just get a Z, you will not look back.
I personally think that 2+2 Zs are not appreciated enough. If there were no 2 seat option the the 2+2 would cost a fortune. They have a beautiful shape.
Zs are not hard to work on, I had little mechanical knowledge when I started. The hardest part for me is finding the parts for the right price. All is awaylable on the net.
2+2 parts are plentiful.
Get one of those, not the zx.
I have a two seater 260z that I am restoring but I also have 2x2+2 as I just like them, they need a lot of work but one 2+2 is running complete car and the other one is just a mint shell.
Work out your budge for a good second hand one and add $5,000.0 for the repairs and you will have your self a really nice Z.
Just couple of weeks ago a silver 260z two seat sold for $8500 on pretty good condition. That was a good buy.
Also you will find that 260z two sweaters are usually in better condition than 240z.
But 240z is the holy grail.
I known of couple for $6,000.0 each but they need at least $10,000 (if you pay a reasonable shop to do the work) each to restore the bodies and make them road worthy.