H1B1, AP, Resident Status

[rausa]

I am currently working on H1B1 – and my visa is valid till May 2009. The visa on passport (from last employer) is valid till March 2008. We applied for green card through my spouse’s company – our I485 has been applied (His H1B1 is valid till Mar 2008). We both got our Advance Paroles, and he got his EAD – about 5 weeks ago. Though my EAD was also requested at the same time, I have not received mine as yet.
Due to my husband’s job we are moving to another city in November. I plan to resign from my job at the end of November, and go for 6 week vacation to India. I plan to look for a new job (hopefully on with my EAD) when I get back in January 2008. I have following questions:
1. Now when I resign & my H1B1 gets cancelled, what would be my status in USA.
2. Do I need to get back to H4 status to come back to US (or just AP would be enough for POE)
3. Do I need to get back to H4 status to stay in US

Thanks in advance for all help