Im not sure about the bull hide.
One thing I have noticed is the tandy oak leaf if you can pick thru it is ok leather but once you try a decent wickett and craig or herman oak or even a good import you will be very happy.
You could very easily use the 7/8 or 9/10. For your projects I would go for double shoulders, culattas, or even double back which is really good for straps. Zack whites carries them.
Sides are nice but thats if you do alot of different stuff then you can use the bellie portions, if all your doing is belts and such the bellies are a waste really.
Kevin hpkins has a really good deal on herman oak right now.