[gentoo-user] Copying root to SSD in one go...a good idea...or?

Hi,

currentlu I am preparing a new Gentoo Linux by compiling all
the application I had on my old system.

Due to delivery problems (corona) my SSD was delivered today
(or yesterday...it depends...;) .

When the whole compilation has finished and the system boots it
needs to be transfered to the SSD.

The SSD has a heat spreader...so it gets hot, when used.

Is it wise to copy the whole root system to the SSD in one go
in respect to a not so healthy heat increase?

And if not...how can I copy the root system in portions
to the SSD and do not miss anything?

Are there SDD-friendly and SSD-unfriendlu methods of copying
greater chunks of data to a SSD (rsync, tar-pipe, cp....)?
What is recommended here?

Thanks a lot for any help for a SSD newbie in advance!

Cheers! And stay heathy!
Meino