I couldn't find a match for him on dream horse but typed in advanced search-Draft,Draft cross under $1,000] and found a few that I would look @ before him. Of coarse without asking further questions than what they have posted.
An Irish Draught is a breed-It is not a Draft Cross. And have a normal shoe size of 3 or 4. A Draft shoe is a speciality shoe not just a bigger size.
I too show Dressage and throughout my career have only meet and seen one person that had a true Draft that was good @ it. She raises Shires and is located in Maryland.
You will be frustrated if you try to seriously pursue or correctly ride Dressage on a Draft, and it is not fair to the animal to ask of it something it is not capable of doing.
Friesians/Andalusians/Lusitano/Lipizanner have a similar look of a Draft and are very capable even bred with an uphill conformation that makes Dressage very easy for them.
And your right, you can never have to many opinions-although they will always be different. Part of what makes horse people so much fun.