This needs to be under Computers & such. The caching concept is a hack, it doesn't help in a wide selection of areas and it causes nothing but problems later on, especially if one of the devices has a problem. Just do the 2tb NVMe drive & see the full performance across the entire storage device, not just when Intel wants to get into the middle of it.
As to moving your existing computer over to the new hardware, you'll need to reinstall all your apps and transfer your data. Do not 'restore a backup' on the new computer. Not only is that bringing any issues you may not notice over - how many Windows 10 version upgrades & such have you done?