I can do nothing more than wish you the very best of luck and admire your optimism.  I opened your post and couldn't help but laugh. And I don't mean "at" you....but at what this would have been in our pig-raisin' days.  Oh my holy cripes!!!   Tank of water for hogs?.............we'd have had 12 of 'em fighting over who was gonna be in it, and 2 would have died of the fight. The float and hose would have been gone in 2 minutes flat. Mud holes from that would have been epic. Panels with more than 4' between posts.............we'd have had everybody all together now.1-2-3!   That feed trough woulda been empty in 5 minutes, and nobody woulda eaten anything....just string it out all over the area. You appear to have some fairly well-mannered pigs, and I really sorta envy you. Ours were never, ever that way!  Have fun! I love your attitude.....you'll do great!!