for sure if the lines at each square have meaning you will probably exceed 128 bits, but even if the line only signifies the ordering of a second level of multipliers it will still do a lot, just lines only horizontal and vertical with turning points alone would be a pretty high number of permutations

i've seen other efforts towards making a more human friendly mnemonic scheme that go for a more visual pattern before but the more iterations you make the sooner you'll have something that really pops, i am not sure you even need the emojis on a 5x5 grid