I'm wondering if what you are trying to say is, "Ia alofa aku fo'i isi o'u uso (rather than US) ma kmaiki ia ma oe le faletua". If this is so, then it translates thus: "Love too to my brother (assuming it's a guy who's talking) and children and you the wife".
Manuia faafetai lava means "Very well thank you"
translation: "bro hit me up if you have some time"
Summary from the Trial/Court Case
That makes no sense whatsoever in Samoan.
ia manuia lava
Manuia le Aso o Tagata Faigaluega
fan
Moonshine
"Manuia le taeao, la'u pele." As there is no word for lover in Samoan, I have translated the idea by using the word "pele" (dear, dearie), as it is an endearment.
"Manuia le taeao, la'u uo" (Good morning, my friend) or "Taeao lelei, la'u uo" (Good morning, my friend).
Sorry, this is not a Samoan phrase.
Vulpes pilum mutat, non mores
Fa'amalosi
Ua mu
O aiga
Oute Misia Oe
E tasi i ta'ua.