H1B to H4 with EAD

[smi4975]

Hello,

I'm currently on my H1B and it expires in Nov 2012. But i also have my EAD after we filed for the I-485 thru my husband. currently working on my EAD( valid till Jan 2013). I cannot further extend my H1B( completing 6 yrs) so, i have applied for the H4 thru my husband's employer.Also we have filed for the EAD renewal as well.

My husband has the H1B approval valid till 2014 but has not got it stamped. My question to you is

1. I know i can continue to stay and work in US on my EAD but since my visa gets expired in Nov will i have to get the H4 stamping done immediately to keep my visa status active?

2. What will be the implications if i don't get the H4 stamped immediately?

3. Since my husband's H1 is valid till 2014 does it not imply that i can also stay here without stamping till 2014?

Please let me know accordingly

Thanks..