Resuggestion, thanks to Foamy and all the others for the info!

Sale 1:

https://backpack.tf/profiles/76561198418740133#!/compare/1536019200/1536105600

https://backpack.tf/profiles/76561198043347809#!/compare/1536019200/1536105600

Sold with Strange KaW Fiend for HG Gibus

Used there

Sale 2:

https://backpack.tf/profiles/76561198192331947#!/compare/1537401600/1539648000

https://backpack.tf/profiles/76561198116040367#!/compare/1539388800/1539820800

SCM

Sale 3:

https://backpack.tf/profiles/76561198095022965#!/compare/1542153600/1542240000

https://backpack.tf/profiles/76561198847680167#!/compare/1542153600/1542240000

Bulk

Sale 4:

https://backpack.tf/profiles/76561198847680167#!/compare/1542240000/1542326400

https://backpack.tf/profiles/76561198022806102#!/compare/1542240000/1542326400

Sold for C9 Shellmet(27) + Duped Cauldron Scotch Bonnet +CH Sinner's(13) + PBoF Rancho

Unable to mini Scotch Bonnet.

Sale 5:

https://backpack.tf/profiles/76561198022806102#!/compare/1542326400/1542672000

https://backpack.tf/profiles/76561198190594053#!/compare/1541808000/1542412800

Sold for Phosphorous Slug + Beams Trucker + Vivid Hedge(23)

No mini on the Slug, taking unsold at 21 keys.

https://i.imgur.com/hMTKAjt.jpg

Trucker Mini:

https://backpack.tf/suggestion/5bfa2abccf6c75447177d1a2

Suggestion for 55 key

Total is 99 keys

Sale 6:

https://backpack.tf/profiles/76561198224648164#!/compare/1537833600/1538006400

https://backpack.tf/profiles/76561198055622215#!/compare/1537920000/1538006400

Sold with 32 keys for Burning Virus Doctor

Use there.

Sale 7:

https://backpack.tf/profiles/76561198055622215#!/compare/1538092800/1538179200

https://backpack.tf/profiles/76561198019444465#!/compare/1538092800/1538179200

Bulk

Sale 8:

https://backpack.tf/profiles/76561198019444465#!/compare/1538352000/1538438400

https://backpack.tf/profiles/76561198042951716#!/compare/1538352000/1538438400

Sold for Bubbling Hazmat

Hazmat Mini:

https://backpack.tf/suggestion/5bfa2c21cf6c7544e34c07ce

Suggestion for 52.5 keys

Sale 9:

https://backpack.tf/profiles/76561198042951716#!/compare/1538956800/1539043200

https://backpack.tf/profiles/76561198056793444#!/compare/1538870400/1538956800

Can't accurately trace.

Foamy's Part:

https://marketplace.tf/items/30658;5;u10 marketplace sales are lower here

MG dogger

https://backpack.tf/profiles/76561198319549446#!/compare/1543881600/1543968000

Lantern bomber + subatomic space

https://backpack.tf/profiles/76561198056793444#!/compare/1543708800/1543795200

https://backpack.tf/profiles/76561198319549446#!/compare/1543795200/1543881600

all those sales are significantly lower - aside from that burning virus supporting that 100 will be high here. It may even be a high outlier altogether, but it may be worth checking if those need minis and if sale 4 has the needed mini by now.

Nothing usable for Sale 4.

Dogger Mini:

https://backpack.tf/suggestion/5c26649e44325a214b47f108

47.5 keys

Bomber only has one other usable sales, better there.

Smokes' Part:

2 usable sales here

https://marketplace.tf/items/30658;5;u10

129.99$ - Nov26 keys were 1.73

= 75 keys

111.11 Dec11 keys were 1.65

=67 keys

New Sale:

https://backpack.tf/profiles/76561198321571677#!/compare/1545955200/1546128000

https://backpack.tf/profiles/76561198255578773#!/compare/1546041600/1546128000

Sold for FN Cardboard Hot RL + Steaming Cosa + Aussie Amby(10)

Cosa Mini:

https://backpack.tf/suggestion/5c31a01644325a0d291573ff

Suggestion for 13.5 keys

RL Mini:

https://backpack.tf/suggestion/5c31b2df44325a1bdd19a1ce

Suggestion for 38.5 keys

Total is 62 keys

After discussing with mods and others, consensus is take 53 - 75 keys.