So Status Credits aren’t the issue – you just need the sectors.
I’m fairly sure that even with family pooling, you need to fly the 4 sectors yourself (hopefully someone will correct me if I’m wrong). That means that you need to fly to somewhere via somewhere else (return) to get the 4 sectors.
I live in Melbourne myself; I think your best (and probably cheapest) option is to fly to somewhere in Queensland via Sydney. Gold Coast, Brisbane, Cairns … take your pick. They’re good options for a getaway and prices can be pretty cheap. Occasionally Virgin has pretty good prices to places like Port Macquarie and Coffs Harbour too, which also involve flying via Sydney. And they’re great places for a short break.
Just make sure that you’re not paying too much extra just for the sake of maintaining Gold. If you’re paying more than $300-$400 more than you otherwise would pay, you’re probably paying too much. (compare this with the cost of a Virgin Australia Lounge membership which gets you most of the same benefits as Gold).
Also make sure that you’re on the Virgin Australia mailing list and that you’ve downloaded the Virgin “Flight Specials” app, so you know when there’s something on sale.
All the best!