Floating Shelf - Is my bracket too big?

Hello!
I’m hanging a large floating shelf over my TV using this video as a guide:
https://youtu.be/LR-Fq9tO1-Q

I ordered some 1/2” diameter rod the other day assuming that I’d be working with 1” thick material but the best I could find at the hardware store was an edge glued oak panel only 3/4” thick. (I don’t have the means or the patience to make my own at the moment).
Now considering I have a 6ft x 15” board hung on 5 rods, will a 1/2” hole be too big for the 3/4” thickness?

I won’t put more than 70 pounds over the whole shelf so I’m optimistic that it would be sturdy enough but I wanted to run it by some pros first.

Thanks!