You will not get any reward but there is reward for top three members active in forums, publishing and commenting.
The achievement is very good if you can and are able, and it should not violate the rules of origin applicable in OC
All proposals / ideas that are good for OC website, in my opinion might be considered by admin
Well there is Nothing mention about rewards on the completion of 5000 points in a days. But this is good effort Admin may considered it for reward
Then you will really put very efforts. Good ! But sorry to say, there is not any reward for making points with high speed.
There is not any such reward are mention but it could be done by admin if he want.