Create a full snapshot of your current system. Copy it off the SSD.
Burn the Generic x86-64 HAOS image to the new SSD using an external HDD to USB adapter.
During onboarding of the new system upload and restore from the snapshot.
There is this community guide: How to restore a backup
Sorry but you really should keep Home Assistant up to date monthly, or at least bi-monthly. If you don’t do this when you do want to update you may have so many breaking changes that it becomes extreme difficult.