Doumen added: "Kasbah Bliss stopped after Cheltenham and had a break until August, when he started to run on the Flat. It has always been the target to go to Cheltenham and he runs well fresh - he doesn't need two or three comeback races. His Flat quality cannot be ignored and that will help him go up the hill."
That quality could enable the seven-year-old son of Epsom Derby winner Kahyasi to take his place in the Ascot Gold Cup this summer, with Doumen harbouring ambitions of a Cheltenham Festival-Royal Ascot double.
He said: "He will run in the Ascot Gold Cup. That will be my first runner there and the faster the ground the better."
Doumen respects Punchestowns and Big Buck's, the main opposition in the World Hurdle, but believes the biggest threat could come from up above.
He said: "Soft ground won't stop him but I think he is a good stone better on good ground. He is getting older and stronger though, so is coping better with different ground."
Christophe Pieux will again be aboard in the World Hurdle and with Inglis Drever now retired the path is clear for a new staying star to be crowned.
Doumen added: "Last year he came there in a bit of a rush and hit the last jump but a length is a length."
If a length is all that is required, Doumen will not be cutting such a solitary figure back to Chantilly clutching his seventh Cheltenham Festival trophy under his arm.
