H-1B visa stamp and AP

[aos_query001]

EB2/Labor (RIR)/Non-concurrent
PD : 09-25-2003
Labor RD : 09-24-2003
Labor AD : 05-03-2004
I140 RD : 07-09-2004
I140 ND : 07-19-2004
I140 AD : 11-09-2004
RD : 12-02-2004
ND : 12-13-2004
FP1 : 01-21-2005

I am on H-1B visa and have completed my 3 years. My employer has filed for H-1B extension but before I get a stamp on my passport I have the following questions -

1) Is it a good idea to get both H-1B stamp and AP?

2) I am from India. Should I get AP before H-1B visa stamp or should I get H-1B visa stamp before AP? Does that matter?

Thanks much in advance