Well , number you are quoting gives a scare and crush the ray of hope , but if we prepare for the worst case and assume 280 per day then let me modify my estimate.
Total Entries 280*14 = 3920.
If we assume number of people on 441 to be 150 till august 8 then total above 440 = 3920+150 = 4070.
Now we are uncertain on draw size. Statistics point to the same or larger draw size but IRCC needs to decide that.
So if pool strength above 440 is estimated to be 4070 on 8th August then cutoff scores could be estimated as
Draw Balance Cutoff
2750 1320 453
3000 1070 451
3250 820 448
3500 570 445
3750 320 443
4000 70 441 (cutoff June third week)
4250 -180 440 (Cutoff jan first week) But 4250 is unlikely given the steady increments.
It seems 280 per day would change the dynamics way too much and lets hope we never reach that number . So lets pray for even less than 230 and stick to 230 theory

as the worst case scenario.