I don't understand why they want to put this thing at West Sale.
Apparently, that's the Boeing consortium's plan and, as is the normal thing, a matter for business plan speculation and risk assessment .. the customer's tender doesn't have any specific interest in any specific location. On the other hand, it does appear that East Sale is moving towards becoming the RAAF's training hub so East Sale or West Sale might fit in with that paradigm ? I can't see any specific indication of aerodrome in the Thales' advert so I guess it could either be for East Sale or West Sale.
There is no infrastructure there, its an uncontrolled airfield,
You would need to read the tender to see what is required and what development might be required at West Sale as a consequence.
the weather is unsuitable to do basic training and flight screening.
A commercial risk consideration for Boeing in these days of performance based contracts.
wind and cloud conditions were hard enough for a qualified RAAF pilot, let alone a beginner.
ditto.
I can't imagine how you'll attract staff (both civilian and military), to work in Sale.
ditto.