I am waiting the approval for H1-B (which already has been filed and
expedited through premium processing) from my current non-profit
employer (I have been working on OPT for almost a year now with this
company).
I have an offer from a profit company. As far as I understand the
portability law allows me to transfer the H1-B to the new employer.

Here is a question:
WHAT ARE THE RULES FOR CHANGING COMPANIES (?A? to ?B?) UNDER H1B, WHEN
COMPANY ?A? WAS QUOTA EXEMPT AND COMPANY ?B? IS PROFIT COMPANY.


To clarify this further:
1. Am I eligible for transfer being that I am going from non-profit
(exempt from the quota) to profit?
2. If yes, then will I be counted towards the quota?
3. Can I apply for transfer as soon as I receive the approval of H1B
from my current employer, or do I have to wait few months and work
under H1B (even though I worked for a year for this company under OPT)
4. What if the salary is higher on the profit company (say 30-60%
more), but it is similar type of job?