Hi there
Capital losses - What do you mean "skipping this deduction"? If there is a loss, you do not have a choice of skipping it. You must claim it.
NJ Residence - You are still domicile of NJ. Any income you generate from your rental property there will be subject to NJ tax (as well as Federal of course).
$80,000 Exclusion - This proposed legilation did not get approved (at least for the time being). Phew!!!
Giving up US citizenship - This is the expatriation rules which is quite complex and lengthy to explain. Suffice to say, if you give up your US citizenship to avoid US taxation, the IRS will still ask you to file US return (subject tocertain rules, test, etc....). If you need more information of this send me an e-mail.
Helen