Your response to a bee sting is not allergic, instead a normal reaction. A true allergy will effect your ability to breathe. Great you have an epi pen.
I really think you should get some rubber bands. I know you already have done a bunch of work, but how you going to move the string and keep it tight without ruining the brood comb, not as solid at things look on the vids you have looked at. If you don't start till Sat, you have time to drop by office depot or something and get a box, they are cheap, even wally world carries those big ones.
Yes, I am looking forward to a nice weekend. My girls have been very upset this week trying to forage between downpours.