Lol, perfect.

OP - What is your monthly household CC spend?

Is your spouse employed and willing to help gather miles and points?

Do you have any side businesses that may help support business card applications?

Will all the miles come from credit cards or is there any biz travel to help?

Redemption to Australia/NZ can be tough from what I have read. Not to plug the blogs, but you may want to read one with a redemption focus like milevalue to figure the paths. The cobwebs of my mind say that from LA (on Virgin Australia) is a rare Delta sweet spot. Which will push you towards Amex. AA is the Quantas partner which points to Citi and SPG.

Your tenth anniversary sounds a bit better than the weekend getaway my wife have planned for next month (kids being the roadblock, not miles), put in the work.