Why not a less intense draft breed? Or something like a warmblood? I have a small draft mare (Canadian horse) She's the best horse I've ever known
She's 15.2 hands and about 1350 pounds and fantastic action when she gets moving. She could easily carry a heavy rider if I ever cared to let anyone else ride her. There are a large number of draft breeds out there that are less maintenance and less intense than a Shire. If you're getting a Shire learn everything you can about common draft problems- they get em all. But why not look for a small percheron or a Perch/QH cross, those are magnificent! Before I found out she was a Canadian horse everyone thought she was a Morgan Perch cross which would be quite a thrilling sight! Draft horses crossed with any hot breed (TBs and Arabs and such) can be registered as American Warmbloods if you care that much about those sorts of things.
Personallyi go for the horse with the winning personality and the shape I like despite what might be fashionable this season in the show ring ;)
Good luck congrats on finally getting a dream come true!