Wow, excellent topic.
One question and one suggestion.
Did the tilapia you added this year seem to have any impact on the moss? If so, then it might be best to focus on them, especially if you can get your supplier to give you exclusively 1/2-1# fish that are in the prime of growing and breeding.
How about using a cheap feed, such as generic "catfish food" from the local coop, to cut feed costs, but still allow some feeding? BG can do fairly well on a less expensive food, if your goal is primarily to grow them for bass forage, and at least in our area it's quite dramatically cheaper than the good stuff. Your BG will definitely grow and produce best with some added forage.
And probably the most important thing is just not to get so busy that you can't keep hammering the LMB...it sounds like you've done a great job thusfar, but this time next year, if you don't keep pounding them, you'll have a pond full of 6-9" bass that are eating tons of YOY BG and restarting the old cycle.
