Upgrading from 3.5.7 to 3.7.3 PL1

[Puntoboy]

I have just performed the upgrade on my test forum before I go ahead and upgrade the live one.

Does anyone have any recommendations about how to go about this successfully once the forum itself is upgraded?

Would it be best to uninstall all the add ons then install new ones? Some of my add ons aren't compatible with 3.7.x and they haven't released an update for them, so should I remove them completely?

I've created a new default style as I couldn't see any of the new features for 3.7.. Would it be best to copy this and customise the copy?

My current live forum is www.puntosports.co.uk/forums and the test forum is test.puntosports.co.uk/forums

I need to get the test site looking like the live site but with all the new features of 3.7.3.

Recommendations please as I am far from good with this kinda thing. Luckily my host is and he's been helping me a lot but I don't want to push it.

Thanks,

Chris