@bicol_2_pnw start with I-130 $535 after you get your NOA2 then proceed to NVC around $600 for AOS fee and IV fee... Medical fee in St.Lukes around 17,025 Pesos. and after that pay green card around $165 and Ticket.
on your next question Time frame it depends what service center. USCIS maybe 6-9 months and NVC maybe 4-6 months and interview maybe 2 weeks-2 months after case complete.
next question the Embassy have there own Translator Visaya Tagalog or etc. they will ask you if you need translator so no need to worry. Your sister cant get inside unless she have US passport.
Hope that helps. Congrats on your Citizenship.. if you need help just send me message..