Thanks for your advice.
I'm flying back on AV via SAL. However on outbound flight AV times are not convenient, and price is almost double. I'd rather use that money to upgrade to premium cabin on the Rouge direct flight.
What's clear is that I'm not going to sit in a standard standard economy seat. Now wondering whether I should invest USD 40-50 for a preferred economy seat or bid for a USD 200 upgrade to premium cabin. Any thoughts?