Upgrading questions

[seareef]

I’m planning on upgrading my current Vbulletin 3.6.9 to 4.1.7 Publishing suite and I have a few questions. Can I go right from 3.6.9 to 4.1.7 or does it need to be in steps? What are some pitfalls that you have experienced? I’ve done several upgrades before but never one this old or large (SQL Database is 1.5G).

Thank you in advance.
C.