A few observations here...all of which is just scratching the surface mind you.
Seems like a very "conflicted" approach to me.
Or I'm not following what you were trying to say.
The way it read to me though is that you're doing large batches of everything...
Mixing very large batches probably isn't the best idea as one is just starting out (unless you've got others hitching a ride on your 'experiment train' that you're supplying as well). As it's likely going to be wasteful (sooner or later, probably the former though) especially if you are mixing recipes that you haven't already confirmed that you like.
If you're only doing that (large batch) with confirmed recipes.. Then obviously ignore the above. Lol
The only other thing I would note is that, the instant you add or substitute any aspect (in relation to DIY recipes) remember one thing: you're no longer making that recipe!
You have arrived at the Do It Yourself phase the instant you decided to substitute! Congratulations!
(PS this wasn't intended to be anything other than a "relax, you're doing great!" message. If you think TFA Brown Sugar might work well in there, then go give it a shot! All I mainly wanted to mention was don't do a huge batch (larger than 30ml) while you're testing a new idea.)
Wishing you continued success and inspiration!