OK, let’s say fully-tested Atlas tech for 5 mass to LEO.
Buy Life Support advancement ¤10, leaving ¤15.
Buy three Vostok capsules ¤6, leaving ¤9.
Buy an Atlas ¤5, leaving ¤4.
Launch three Vostok + Atlas + RossM’s payload to LEO on a double-Saturn
Separate RossM’s payload and transfer it back
End turn