Take Magento V1.9 including data with theme and modules to the latest community edition V2.
Install and setup of BoostmyShop Embedded ERP with certain addons.
Deadline is not too critical as I would rather have a perfectly working setup before migrating. The business is currently running on Magento 1.9 which would continue until the new system is ready and we can "flip the switch". I have a dedicated server where a staging version can be installed and prepared before changing over.