2 questions about part II

Hi all,
I have passed part I and I'm now moving to the part II of SCEA.
I'm a bit confused about this step, I hope somebody can answer this 2 questions:
1) Since there's not a specific book about part II, I don't know what else to study beside UML. So, is it advisable to book the exam NOW and take all the time I need to complete it ? (As far as I know there's no time limit to complete the step)

2) May I use an opensource tool (like Argo-uml) to build my solution for the exam ?

Thanks a lot in advance
Francesco

1) Since there's not a specific book about part II, I don't know what else to study beside UML. So, is it advisable to book the exam NOW and take all the time I need to complete it ? (As far as I know there's no time limit to complete the step)

+++ yes, why not

2) May I use an opensource tool (like Argo-uml) to build my solution for the exam ?

+++ yes, if it creates standard UML