Flap Extension Speed
Regarding the flaps, do a google search for "Hawker Hunter (Early) F.1 discussion thread", has a lot of great photos and documents on performance. It says:
"VFE (flap extension) been 300 knots to flap 40° Otherwise Mach 0.9".
I would post the link, but when I do my posts seem to disappear... (shrug)