I've seen some 49,000 point annual ($380 annual maintenance fees) or biennial ($191 annual maintenance fees) weeks that people are giving away, sometimes even paying the transfer fee and deed prep. That would be where I suggest that you start. If get one of those deeds and you decide you want more points you can always look for another listing to buy or take over but in the meantime if you need more points you can rent them or you can borrow points from your next use year.
You can book less than full week stays at some but not all resorts with RCI but they primarily have full week stays starting Friday, Saturday or Sunday and that varies from resort to resort. When you see a reservation on RCI it is what it is, you cannot change the check in date. As a Vacation Village owner you are able to book nights directly through your resort at a decent price if you wanted just a weekend stay.
We are currently staying for 2 weeks at Vacation Village at Parkway in Orlando with our 5 year old granddaughter. She particularly enjoys the activities here and her favorites are the free sno-cones, free face painting, games at the pool, movie nights by the pool with $1 bags of freshly popped popcorn. I booked both weeks as sale weeks with no points used. The location is excellent, close to restaurants, a Publix grocery store, Walmart, etc. The Disney parks aren't that far either but the resort has a free shuttle too. We've also booked weeks at Wyndham Star Island with those sale weeks. Star Island is maybe 2 miles down the road from VV at Pkwy.