Sorry for the cheat, but not knowing Lojban I didn't understand the question at first.
My mistake on the parentheses (never having had a linguistics class), but now I think I see how yours work. I'm glad the matchup still looks good, because after just now rereading Pije's lesson on "pi", I'm not sure what means what anymore.
I don't understand how 4.4 (tomo pi meli lili pona) could be grouped two ways. I would think the (beautiful school for little girls) would have
to be a different order, right? (tomo pona pi meli lili). But then, I guess this is what we are always trying to do with ala
--sticking them at the end to negate or pluralize the head noun.
so with jan Mato's more exacting 'tomo sona' and 'pona lukin' can we still make it work?
4.2) tomo sona pi meli pi lili pi pona lukin. (school for girls who are beautifully small)
4.3) tomo sona meli pi lili pi pona lukin. (girls' school which is beautifully small)
4.4) tomo sona pi meli lili pi pona lukin. (school for small girls who are beautiful)
4.5) tomo sona meli lili pi pona lukin (small school for girls which is beautiful)
As for context will decide, meli mi li toki e ni: "lon ilo ni la, toki ale
pi jan lili pi pona lukin li monsuta."