I would only take if you think you can do fairly well, otherwise I am not sure it would be helpful. You could take it and then based on your score decide whether to use it for your application. You could spend the effort on something else to spruce up your application like research.
This post I made shows where students from different medical schools ended up matching. It may or may not give you a rough caliber of the competition at various programs. For example, the "publicly known" RIC matches were from these schools:
Northwestern
1. MD/UMDNJ-NJMS
2. MD/Penn State
3. MD/Pitt
4. MD/Duke
5. MD/UChicago
6. MD/Northwestern
7. MD/Upstate
8. MD/Rush
9. DO/CCOM
Good luck in your decision!