Some sales.

Sold for a Steaming Big Elfin' Deal(10 Keys with Overpay)

http://backpack.tf/profiles/76561198072876746?time=1443078000 (September 24th)

http://backpack.tf/profiles/76561198072876746?time=1443250800 (September 26th)

http://backpack.tf/profiles/76561198050544743?time=1442732400 (September 20th)

http://backpack.tf/profiles/76561198050544743?time=1443250800 (September 26th)

Sold for an Orbiting Fire Sober Stuntman(10 Keys with Overpay)*

http://backpack.tf/profiles/76561198085171133?time=1443510000 (September 29th)

http://backpack.tf/profiles/76561198085171133?time=1443596400 (September 30th)

*I know you used the nuts counter to price the stuntman, however your mini for that sale was pretty flawed(none of the histories matched, and the counter's B/O was 8: http://www.tf2outpost.com/trade/26800644 ), so it's invalid. The sugg got accepted because of the miami hard counter sale.

Sold with ~1 Key in Sweets for a Pro KS Rocket Launcher(6 Keys) and ~4 Keys in Sweets(8 Keys total with Overpay)

http://backpack.tf/profiles/76561198203515224?time=1443078000 (September 24th)

http://backpack.tf/profiles/76561198203515224?time=1443337200 (September 27th)

Pro KS Rocket Launcher mini suggestion

All recent sales on the SCM(Keys = $2.49): http://steamcommunity.com/market/listings/440/Professional%20Killstreak%20Rocket%20Launcher

$16.53

$16.53

$17.77

$17.36

$17.36

$15.11

$14.79

$14.21

$15.07

$15.06

$13.75

$14.45

$14.45

$12.89

$11.50

$12.97

$13.80

$21.32

$14.05

$14.05

$21.45

$14.75

$15.06

$14.38

$14.38

$14.38

The average comes out at $15.28(Roughly 6 Keys)

I would go with 8-10 here.