Samsung galaxy a7

Hi,
I would like to have a version of /e/ for Samsung A7 2018 (a7y18lte)
It seems the device is supported by Project Treble … that means it is possible to load a GSI ROM image…
Then my queries:

  1. where can I found a GSI ROM for A7 2018?
  2. can I use an A7 phone with GSI ROM but without Google Apps & services?
  3. is there a way to adapt the /e/ or LineagesOS for this model? what is missing to have it on /e/ device compliant?

Thanks in advance
M