Hi All, I inherited a very integrated and customized netsuite enviroment. Any best practices on how to go about preparing for the new release?

Be sure to request a Release Preview account to test the new features before the upgrade is deployed. Check the new features relevant to the modules included in your account if there are any overlaps to any customized processes that you may have(ex. Print button for a transaction didn't exist before but now there is but a customized Print button also exists)