Ok... then you are going to boot into your live cd when your ready (16 core or pro). Hit the install. Choose the something else method. This will allow you to select all the partitions and delete them. Create three partitions, one fat32 at 500mb this is your efi partition, one ext4 at 60+ gb this is your root partition mounted at /, and another ext4 at 60+ gb this is your home partition mounted at /home.
Optional: create one or two partitions for data storage and backup. These two partitions can be mounted at boot, you just have to think of the mount name. Then choose the mount option for each and it will be under /mnt/[mount name] (without the square brackets).
If you want to use hibernation, create a swap partition which will mount on /swap.
Under the partition window is a drop down list for boot installation location. Click that and choose the efi you created. Hit ok. After you reboot copy over your home directory into home, merging the files/ directories.
If you choose the wipe drive option, your home folder will be in the system partition. This will matter when you want to reinstall or install and use other versions of Linux.
Recommend you use a seperate home partition.