While I-485 is pending you may apply for work permit.

Consider filing for E-2 if eligible and qualified.

It appears you do not have a direct immigration issue or concern. Feel free to rebmit your inquiry.

No employment after the I-94 expiry date and while I-539 is pending is not allowed.

Chances of favorable review are unlikely. You may try and see what happens.

PASSIVE trading on forex trading in currency and trading in US stock market, does not require DHS authorization.

Submit your request to expediate your application. USCIS adjudicates case on its merits.

It is best to wait until your I=131 is approved before trvaelling abroad.

I agree with all the above responses. USCIS has 120 days after your N-400 interview to send oath ceremony invitation.

Unfortunately, you cannot stay in the US after 90 days of unemployement.