Chord diagrams or not?

While working on the LMGi classroom method, I initially decided to use both guitar and ukulele tabs at the same, for two songs per page.

But then I stumbled across an earlier version, where I used to put down the chord-diagrams on the same page (as the examples at the top).

Which means that instead of two lessons and two instruments on one page, I will need to have two lessons and one instrument - but it will have chord-diagrams and looks much clearer (examples at the bottom).

Example 1: guitar & ukulele on the same page, no chord-diagrams
Example 2: guitar & ukulele on the same page, no chord-diagrams
Example 3: guitar & ukulele on the same page, no chord-diagrams
ex1: guitar only plus chord diagrams
ex1: ukulele only plus chord diagrams
ex2: guitar only plus chord diagrams
ex2: ukulele only plus chord diagrams
ex3: guitar only plus chord diagrams
ex3: ukulele only plus chord diagrams