Glad to hear that. I understand how difficult it is to create a new schedule or modify one (maybe the second is even more difficult) as I tried once to start my VA but quit due to lack of time. Anyway, just in case it might be helpful for you I can tell you that in real life the Greec airports which are directly connected with LGAV via Jet flights and therefore can host a jet are the following:
LGTS, LGIR, LGSA, LGSR, LGMT, LGKR, LGRP, LGKO, LGLM, LGAL, LGKV from which LGTS and LGRP do have an ILS facility.
They are served basicaly by 737s and 717s (small and medium jets) but LGTS, LGRP, LGKR, LGIR, LGAL are also suitable for landing heavies. Apart from that LGKR and LGRP are visitors attravtions duting the summer as you may know and the national aircarrier had even used 747s in the past.
I hope I helped a bit.