Balloon Supported Antenna!!! Will it float away?

I had contemplated a test to see if I supported an EFRW (End Fed Random Wire) with a helium balloon would it work. I went to a few stores and finally found some balloons I could use to put some helium in. I had a one month expired bottle of 99.999% helium and used a 0.5L valve to fill the balloons up. Needless to say, that took like 30 minutes for 5 balloons with that slow regulator. Once outside they struggled to stay buoyant even with a 26 gauge wire from a PackTenna EFRW. Let's see how they due running QRP through the antenna only about 8–10 feet off the ground.