People adopting this strategy will typically be realistic in what's possible. Here's an experiment for you. Take a look at 2 and 3 bed availability in January (within the 7 month window) for one week stays. I can get VGF, PVB, BLT, etc. I can enjoy those having paid a fraction of the price for those points by buying at OKW or SSR.
For wheeler-dealers there are probably some great trades. A week in a 2 bed at VGF in Jan (431 points) might cost around $10k via the rental market. You might be able to buy a 150 point resale contract at VGF for $150 a point ($22,500) and then bank/borrow to get the required points for that stay (every 3 years). However, I could pretty easily find a double points contract at OKW for $80 a point on a 210/230 point contract ($18400). I could nab the one week at VGF with all those points. Even in the most ridiculous scenario, I could then immediately sell that contract for half price return (given it's stripped, commission, taxes, etc) and it's still cheaper than going through the rental store. But I might just keep it and use your VGF every two years instead of your three years. I only need to be a tiny bit flexible on my stays and I'm dollars in by going for OKW/SSR SAPs.
It may not work for more popular studios, but I'm looking at go big or go home!