Help! Short cycle.

My cycle is 27 days. 13 dpo to period. That being said when can I start with early testing? First response says 6 days before AF . That's only 7 dpo. Everyone says no one gets brp until like 10 dpo at least. So my question is should I take an early test 6 days before AF at 7 days dpo or wait until the more traditional 10-12 dpo? Ps I know that it's best to wait until missed period but I'm a POASA :/