Marla Cowden

Straw bales work. I spent years 5-18 growing up in an uninsulated house in central Wisconsin.  Every fall my father and brothers would put fresh tar paper around the base of the house to the height of 3 bales.  Then stack the bales against the house.  We were always cold so I thought it was stupid.
One year my father got sick for several months in the fall and didn't get to it until after Christmas.  I was never so cold in my life.  We children fought to stand next to the space heaters.  When my father recovered and the bales got placed, I nearly kissed every bale.  (I did kiss my dad repeatedly.)
Never again did this wise butt ever question the efficacy of those bales.  Also they were great in the garden after year of rotting next to it.  Composting? The word was not in usage back then.
Good luck with greenhouse house.  Sounds dreamy.

Duck tape from inside.  Use short strips placed perpendicular to the wire leaving 1/2" gap at center where wire goes through.  Illustration:

         |||             < duct tape, tight
---------] ] ]---------  < wire with loose tape
         |||             < duct tape, tight

Experiential warnings - The cosmos has spoken!

1) Do not attempt to undo any mistakes.  Move next to it and do another.   No takesy backsies.
2) Less is more.  Too close together will create too much tension.  Ever seen the flying nun?  Listen to the cosmos!  You will have to experiment.  
   I don't know your wire gauge or plastic mm.  Start with maybe every 3 - 4 ft??? laterally.  Evenly space 4 on the rise (2 on each side) depending on how high.  You can always add.
Caveats:  Max common wind velocity.  Wire gauge.  Plastic thickness.  Never tried covering 3 at a time.

I have also had good luck using the stick-on cable tie holders that you can get on that union busting online store that delivers in 1? 2? 3? never? days.  Be sure to get only those that have strong adhesive, preferably superglue.  Should be around $10 per 100.
More from the cosmos:  Wear cheap disposable medical gloves while attaching.  It is easier to remove and toss glove with holder stuck to it than to get holder and any remaining adhesive off your finger.
Be well.  May your cosmos be kinder to you.