You can transfer your 60K SPG to AS, generating 75K with your existing 35K, giving you 110K. That is the required amount for a business ticket on Qantas redeemed through AS. Qantas awards must be booked through the partner desk and AS can redeem at the same time the awards are released (shhh).
Book the coach awards with your AA miles at 330 days. All of you could be on the same flight, although you may not want that since you're in biz and they're in coach?