Debian 10 on Mac Mini G4

[Sante Nocciolino <ziosante@libero.it>]

Hi everybody,
I installed Debian 10 on my Mac Mini G4 1.5Ghz Radeon 9200 with 1GB RAM.
I installed this
http://cdimage.debian.org/cdimage/ports/2019-11-22/debian-10.0-powerpc-NETINST-1.iso
Booting with yaboot, creating a separate /boot partition in ext2 while
the root is ext4
I installed webmin and the system is now recognized as "Debian Linux
11.0" after some update

At the moment I'm using this repositories in apt:
deb http://archive.debian.org/debian/ jessie non-free contrib main
deb http://ftp.ports.debian.org/debian-ports/ unstable main
deb http://ftp.ports.debian.org/debian-ports/ unreleased main
deb http://ftp.ports.debian.org/debian-ports/ experimental main
deb [arch=all] http://ftp.debian.org/debian/ unstable main contrib non-free

updates seem to work.
I'm right with these repositories?

Thanks.