Excellent concept. I'd change one thing at a time and pursue that for optimum taste.
We have a choice of 4 fat levels in milk: whole (3.2% butterfat), 2%, 1% and skim. I don't have the foggiest idea of the fat level in Mozzarella milk. I'd guess that whole milk would result in a richer cheese.
We can buy the cheese-making enzyme in our grocery stores as "Rennilase." I used it for 20 years in a bio lab exercise on enzyme function. Fresh and unripened but salted, I always enjoyed it. Most students were repulsed as it didn't come from the store as packs of square slices and wasn't dyed orange. I recall we used whole milk.
I'd be glad to work on the tomatoes & herbs part for the sauce ( do I have to dry my own seawater to get my own salt?
This winter, I'll change the tomato type and source for every batch of sauce I make. While guests always find the existing sauce good, I'm bored to tears with the taste.