Purchase decision in NJ, dealer incentive/tax credit etc?

Been thinking about upgrading another car to prime (bought one last year), but have some tax credit questions and would appreciate suggestions about dealers with good incentives.

I live in NJ, current 2017 Prime Toyota incentive is $5K, making it a better choice than 2018 ($500 only). So my questions are:

1. I believe neither NJ nor its counties has any money incentive for PHEVs right? Please correct me if I'm wrong, I'd be kicking myself if I missed sth for my last purchase but at least won't miss for this one.
   
2. Anyone knows some dealership offering good incentives for 2017 models? I've also heard from other threads that NorthEast dealers might be offering incentive (>$1K, some thread said $3K or sth.). Would help to know where to start negotiating.
   
3. Would I get the $4.5K fed tax credit for 2018 tax year if I buy a 2017 model now (I already bought a 2017 model in 2017 and claimed the tax credit on my 2017 tax return)? I would think it's not an issue and dealer told me last year when I purchased that one can get one credit each year. Just want to confirm.

Would appreciate any suggestion, thanks much! BTW we decided that Prime Advanced is the trim level we want (over Premium or Prius Four - which is much more expensive as it's 2018).

 

Thanks. I viewed that document last year but I believe no sales tax is only for pure EV, not for PHEVs. Last year I had to pay sales tax on my Prime Premium too. I'd be more than happy if I was wrong though ...

 

Thanks! So the dealer was wrong in saying one credit per year, it's one credit per new car? Also I understand that if, say, your Fed tax for the year is supposed to be $5000, and you paid $4900, then with the Prime tax credit, you do get $4402 back - right? Your statement that you lose the credit if it's in excess of tax only applies to situation where your Fed tax for the year is not even at $4502, say, it's only $3000, then you can only take $3000 credit instead of $4502.

I in fact went to each dealership's website to see the inventory, although at times a dealer would tell me the car I wanted was already gone. I doubt it was just sold when I start looking, judging by the fact that Advanced is clearly not flying off the lot. Wonder if it's because they were slow updating their website or just a sales tactic to get me to buy a different and/or instill a sense of urgency.