Suite Do i have this right??

[محروم.كوم]

Ok before I even attempt to upgrade my suite to 4.01. I currently use 4.0.

1. Would it be wise of me to choose the default style when installing? I currently have a skin I installed.
2. Can I export my current skin then upgrade then import it again? Will I have all the mods installed on it like template mods and stuff?
3. Should I add the line to disable the plugins on the config file? Can I still use the same config file or do I need to edit the config file that comes with the upgrade and replace it?
What other precautions should I take other that backing up my database before upgrade? __DEFINE_LIKE_SHARE__