Creating Horse Breed?

[The Tobiano]

Hey!
I apologize for the title, I couldn't think of anything better. I'm trying to breed some cross horses to get a new line Thoroughbred, however, I need some help.
Could I use an exact cross of North African Barb x Arabian, and breed that to Part Akhal-Teke x Galloway? Does the "part" really matter? Would I get a Grade Horse or a Part Thoroughbred? (If that's a thing in this situation). I'm really new to this, so I apologize if this is a silly question.
Thanks so much!

[QuesthavenFarms]

Hey!
I apologize for the title, I couldn't think of anything better. I'm trying to breed some cross horses to get a new line Thoroughbred, however, I need some help.
Could I use an exact cross of North African Barb x Arabian, and breed that to Part Akhal-Teke x Galloway? Does the "part" really matter? Would I get a Grade Horse or a Part Thoroughbred? (If that's a thing in this situation). I'm really new to this, so I apologize if this is a silly question.
Thanks so much!

Part doesn't matter but you should buy the TB book and make sure your foundation horses score well in the Thoroughbred book. The books are in the market bookstore.

[The Tobiano]

Good idea! Thanks for the help!