What you are doing looks solid to me. If I were in your position, and wanted to add in rows, I would swap out your chins/pullups on one of your pressing days (I would choose the bench day. Just a personal "balance" thing) and add in some DB rows. Probably 5x10.
I know Kroc rows are great for grip strength, but you can get SOME of the same benefits with basic DB rows using 5x10, as long as you slowly progress into heavier DB weights. Also, 5x10 DB rows would be FAR less taxing than heavy BB rows, especially if you add them in without taking anything out.
Again, I wouldn't ADD any rows to any days without REMOVING something else (in this case, the chins). Just swap them out. Plus, this gives you some variety in your pulling work, rather than always using chins.
Ultimately, it's your decision. I'm just saying that the more you overthink this, and the more you change the template, the less effective it will become. Alter it to fit your wants/needs in a minor way if you wish, but change too much and you mess up the balance.
I hope this was helpful.