Curious about buying Hyatt

I'm considering purchasing a week at a Hyatt. My thought would be to purchase a week worth around 1800 points at a property with low MFs, and then use those points to trade into other Hyatt properties. My schedule and destinations can be extremely flexible, so I can turn my purchase into multiple low demand weeks. The Hyatt program seems fairly clearly laid out to me, and the Hyatts I have been to tend to be high quality properties.

Am i missing anything with this approach? Is it challenging to get find availability in the low point weeks? Is there another program where I can do the same thing at a better value?

I was also considering "renting" a current owners week and then playing around with the points on my own for a year to see if I still want to buy. Is that something that is doable?

Thanks in advance!

Curious about buying Hyatt