You can actually put a slimline3 LNB on that dish and make it work for hi definition. I played with it and got it to work. Because the dish is smaller you will not get as strong a signal as with the slimlin3 dish but strong enough to give you a decent picture. The advantage is that it takes up less room.
The PVC stand worked great when I used it for SD. I made mine with three legs. Much easier to level three legs verses four. I put caps on each leg then drilled holes from the top of the elbow down through the caps. i then epoxied nuts inside the caps and installed carriage bolts. Simply adjust bolts to level.
If the weather ever straightens up I'm going to see if i can get the setup working again.