After measuring everything, I think I'm going to go with 6ft posts (or 5.5, if I can find them). There are little rings installed into the walls of the shed I'm going to be attaching all this to, and the highest ring is 4ft off the ground - so I'm thinking my highest strip of fencing'll be 4ft off the ground as well (that will come to just below Lacey's withers and about 3 inches above Lady, the foster,'s withers).
Here's the to-scale drawing I drew, in case anyone happens to see some dramatic/"that's not going to work in any world" problem.
The one things I am mildly concerned about it the fence section in front of the shed. There's a very steep incline right there so it seems like setting the posts right below it isn't a good idea ("please horses, forget there's an incline and try to jump off it, impaling your self on the t-posts I conveniently placed there for that purpose") but at the same time, placing t-posts above the incline seems like a difficult task (the incline is 3-4ft tall, rising over about 3ft)... Maybe it'll be easier than it seems and it would be MUCH safer. I'm thinking of placing a post right below the incline, as well as above, since the incline would make the bottom of the fence really high if I didn't...
Also, the places where the fence seems to flow into the shed -the middle divider and on the far right of the right stall- are where there are giant staple/metal hook things that I plan on attaching the tape to. At least in the middle, that'll make it so I can easily remove that section and have it be one big shindig.
That extra corner, on the far right of the right stall, is there before that's a great tying spot. I wish it didn't have to be there but I felt like tying a horse up right next to the fence is probably asking for trouble... In the other stall, the right front corner of the tack room has a beam suitable for tying to.
The middle divider is my preferred tying spot but that'll be up against the fence again... :/ Lacey'd be fine with that but the foster...she's still young and dumb.
It's looking like I'll need 8 posts? Is 18ft and 16ft still with in acceptable ranges for electric tape?
What do you guys think?
Also, I'm thinking that each side will be 4 strands of tape... since that seems sturdier than 3 and not excessive like 5 might be...