Stability study at zone 4

Product is studied for 30/75 and 40/75 condition in transferring unit now we want to study product at 30/65 instead of 30/75 for long term for domestic market in receiving unit it is acceptable?
Justification :the product is stable for 30/75
Also we are performing study at 40/75
Label storage: store in Cool place.
We are submitting product to domestic not to RoW market.