Saddle maker Recommendations for Irish Sport Horse?

[mckulley1]

Saddle Maker recommendations for the needs of this Irish Sport Horse?
She's built more like a warmblood or TB through the withers and shoulders. A MW tree suits her just fine. She's not particularly broad through the shoulders, average or a little more than average.

Where she's hanging me up is that I've been told she's flatter through the back, so the Ideal International VSD GP saddle she's in, is causing some mild discomfort over the lumbar area AND she broadens out greatly from front to back - looking more like a cob through the back.

This makes me believe I need a flatter tree saddle with broad panels. HA! Great, but where does one start with manufacturers? Any suggestions - help greatly appreciated!? I've added some photos.

 

[mckulley1]

ADDED: I'd be happy with a GP or would even consider a Dressage model if the flaps were a little more forward. She does "prefer" a straighter cut saddle panel with a longer leg, as she was broke and had most of her young training under a Dressage rider. Even though our primary job is trail riding and fox hunting, I'd prefer her comfort over anything else. We're not jumping anything big yet anyway (She's 6 going on 7).