Edward, my old DBM army (shows how long since I played Ancients!) is more than enough for a standard 200pt ADLG army. I'm currently expanding a DBA army for ADLG, which needs 2-3 times the troops.
I got my rulebook at a shop in Central London called 'Orc's Nest'. I've been playing at Farnborough Wargames Society, on occasional Fridays. I knew some guys who played there & it's easy on ...