Traefik on Docker swarm with 2GB ram and 8 core cpu

Hello everyone
I recently iinheriited 11 Odroid XU4 single board computers. Each has an 8 core armhf (32 bit) cpu, gigabit ethernet and 2GB ram. My plan is to create a docker swarm cluster to host 5 lightweight websites. 5 of the sbcs will be managers and the remaining 6 will be workers. On each of the managers I will only run one Traefik container and on the 6 workers, one each of PHP, memcached, composer and mariadb. Storage for both the files and the database will be stored on dedicated hosts.
My question is: Will these computers be able to handle this, especially up to 20 concurrent connections?
Thank you

Should work. Simple Traefik Swarm example.

@bluepuma77
Thank you