New SSD. Win 10, fresh install or clone?

What's up all,

Finally got an SSD to use as my OS/boot drive and have a couple hopefully simple questions.

Currently running win 10 on a 1TB HDD, with a second 1TB HDD ready to go in for extra space. I've just got a 250GB ssd. I was wondering what the best course of action would be.

Backup current drive to new hard drive and clone?

Backup current drive to new hard drive and fresh install win on ssd ?

After a clone or fresh install, how do I go about deleting old windows from HDD? Just format disk completly? I will probably only be backing up photos/files/music and just reinstalling apps and drivers.

Sorry if this is a dumb question.

New drive is a wd blue m.2