Several factors:
1. What age group? If I am an older team, I would be trying to get into GAPSS. If a younger team, then probably the WS.
2. Am I selected to be in GAPSS? If selected, then I am going to GAPSS because I have already given them money. If not selected, then I would go to the WS.
3. If I am waiting till now to decide where to send my application, I will be going to the WS because I am too late to apply to GAPSS.