When I closed on my timeshare this past July, I had 16800 points to use in 6 months (8400 2013 plus 8400 rescued 2012 points) so did some binge research on RCI vs SFX. Even though SFX is more expensive to make the exchanges, I personally found it was a better overall value once I factored in quality of resort, room upgrades, and bonus weeks. YMMV.
But the bigger question is whether you can make a reservation at GW for this year that you can deposit, and if you can whether you can still get bonus weeks. You may want to consider just rescuing 2013 points, and then have 2014 to deal with what may be an excess of points (that's what we did).
A quick breakdown of my findings of SFX costs/benefits vs RCI...
COSTS
Membership
To maximize points, you'll want either a Platinum membership ($199/year) or a Diamond membership ($299/year). You can see all the details at
http://www.sfx-resorts.com/membership.aspx. We got a complimentary Diamond membership with our purchase, but when we renew I'd probably go with Platinum.
Exchange Fees
Currently, you can exchange either your Home Week or a Club Reservation. You'll want to make a Club reservation if you own something other than a 1BR standard, since with a Platinum/Diamond you can exchange a 1 BR for a 2BR for no additional points.
SFX Costs - $169 (Platinum) / $149 (Diamond) per exchange. You don't pay this to SFX if you book a Bonus week.
HGVC Costs - With a Club Reservation, you'll need to pay $49 for the reservation AND $49 for a guest certificate.
BENEFITS
Quality - SFX resort quality is high compared to RCI and gives you access to Marriotts, which trade through II.
Customer Service - You can do your deposits all online, but SFX's online exchange is pretty useless. I thought this would be a downside, but they are very knowledgeable and helpful on the phone. I've dealt mostly with Nathan, who is great.
Point Stretching - When depositing, look for a week that is considered High to SFX but Gold to HVC. For example, I booked a 1br on I-Drive over Thanksgiving for 3600 points and exchanged for a 2BR at Grand Mayan in Cabo. There's tons of availability for this resort in RCI too, but would take 4800 points to book the 2br.
Bonus Weeks - When you deposit a week, depending on where and when it is, you get up to three bonus weeks where you pay cash instead of points. Bonus Weeks are typically on a sliding scale starting at $699 for a 1BR 181+ days out down to $199/week 20 days out. For resorts that have do bulk deposits to SFX, bonus week are a great deal. For example, we're using a bonus week to bring another family to Cabo with us for $599.
Not sure about overall SFX availability, but others can comment on that better than I can. We've booked 4 exchanges with SFX in the past 3 months, and got exactly weeks, room size, and resorts we wanted. But our destination picks have been Mexico and Tahoe, both places where SFX is strong. Since it's a smaller company, there may not be sufficient deposits in other locations. You can call them to ask about deposit history if there's a location you're specifically interested in.
Hope this helps!
Donna