If I book a discount PE seat from DFW-OGG, and I request to upgrade with stickers, I understand the priority of upgrades (I’m guessing time of request if
never a factor since how often will two members have the same exact rolling dollar spending).

I was also considering requesting a 15,000 mile $175 copay upgrade. The miles upgrades have priority over stickers. When do miles upgrades start opening up and clearing compared to stickers?

Is there anyway to assess my sticker upgrade chances as a platinum as flight time gets closer and then request a miles upgrade if jt doesn’t look like I will get a stickers upgrade? Does anyone know the data on miles and stickers upgrades success rates on dfw-ogg? I am guessing that any lie flat routes that can be upgraded with stickers or less miles/dollars than say a Europe biz class upgrade, will be difficult to get.