I would call and ask them for their opinion! I find that most beginners have difficultly keeping their stirrup in a proper position when riding in cowboy boots, which makes it much harder to learn a correct leg position! Plus they usually have less ankle flexibility and support. I personally can't stand it when students come in with cowboy boots. In fact, I prefer the "fashion boots with a heel" to them. Either way, paddock boots are highly highly suggested! But Chinga had some great advice. You could try a lesson or two to make sure that's what you want to do before making a purchase. Have fun!