Looks like you pretty much have it under control, your plan of attack looks good to me.
Regarding the 2 hours wait period after adding acid--if you're waiting to see what the resulting pH is after the acid addition, then you probably should wait the 2 hours, because it can take that long for the acid to be distributed evenly in the pool, and you'll sometimes get a falsely high pH reading if your chlorine is high from the large bleach addition. However, if you already know where that's going to put your pH, and you're just concerned about the safety of adding the chems that close together, waiting 2 hours is not really necessary. I add mine in front of a return, pouring very slowly, and usually wait 15-20 minutes before following up with bleach.

Regarding Borax, since you want to make very small additions, I would start with a couple of cups at a time. Add it very slowly through the skimmer, breaking up any clumps, give it time to dissolve and circulate ( a couple of hours is enough) and then test and add more if necessary.

Janet