All official Toki Pona words are written in lower case - even at the beginning of the sentence.
After "pi" you have to write at least two words (a noun and an adjective or a pronoun and adjective).
The conjunction "en" connects nouns and pronouns only.
Maybe the verb "kasi" (to grow) is better than "kama".
You can use the transitive verb "lupa" (to pierce).
tenpo pini suli la lawa tomo li pakala. tenpo pini suli kin la kasi li kasi, lon tomo li lupa e lawa tomo.
I'm also wondering about this too
Maybe it should be:
sina wile moku, lon poka jan "Alfred" anu lukin e sitelen tawa, lon poka mi?
Chaining "la" phrases are possible. But for me more than two "la" phrases are not good Toki Pona style.
ken la tenpo kama la ... is ofen use for "Maybe in the future ...".
Please see these lessons:https://jan-lope.github.io/Toki_Pona_lessons_English/
For spell and grammar check you can use the Toki Pona Parserhttps://jan-lope.github.io/Toki_Pona-Parser/