So after a bit of research I am down to the 4 original chances I came up with.

Dowager Queen
Mosheen
Gliding
Raheel

As this is their first run at 2500m its all a bit of guesswork. If we look as past form

Mosheen has beaten Rahveel 3 from 3 races (1600m or less)
Rahveel has beaten gliding 2 from 2 races
Both Gliding and Dowager Queen have beaten each other once.

Looking at that it would suggest Mosheen is the horse to back but she has never ran further then 1600m and a step up of 900m is a very big step up in distance. At least the others are coming off a 2000m run and are only stepping up 500m.

At least I have a 25% chance of picking the right horse.

I'll watch the videos today and see if anyone catches my eye in their previous runs.