This will be tough to fix , 9 upgrades to do and very little cash to do it.
Certainly wouldn't be trading out Pickett (he might be your season long M8)
I would definitely keep Rankine as well.
Hamill - > Watson (Fremantle)
Hoskin-Elliott - > Simpkin or Darling/Kennedy/Oscar McInerney
maybe bring Schoenberg (Adelaide) in on your mid bench or wait a week for Wicks
to be honest not sure what else , maybe
@THCLT can come up with a master trade plan for you (he is good at that)