http://thecavalry.net/ might give a bit of an idea what kind of tack & gear you need for your horse. It is the only source I can point you to at the moment. You are undertaking quite a task... first if I might suggest some good solid research; the Texas Ranger Historian might well yield some invaluable resources. As you represent a Texas
Cav man... don't bother w/ the flash or blass; stick w/ the basics and most importantly learn to live w/ your horse. There are numerous accounts of Tex
cav literally mounting their horse to cross from one side of the camp to the other.
Those men lived & breathed their horses. As many had teethed dealing w/ the Commanche it was a necessity. That kind of relationship is too often missed by
Cav re-enactors.
Take hard look at Trioni's excellent unit studies of Forrests Man & the 8th TX
Cav... both show excellent detail of equipment.
Good Luck