I'm building a goat night pen with 16x4 cattle panels to night pen them from our Mountain Lion problem. The cattle panels are supported by 100% 7 foot t post driven 3 feet in the ground. I will then install PVC pipe 4 Ft. tall. I ran 8 strands of hot wire around the pen above the cattle panels. I then will run hot on the bottom to prevent digging. Will the t post be alright or should I have gone with wooden post? Any recommendations?