Baby essentials to get

Hi mummies and mummies-to-be! #1stimemom and I need some advice on some baby essentials. I am also looking around for mummies whom babies have already outgrown the baby products and is ready to bless our baby girl#firstbaby 🥰 1) Multi-purpose baby cot ( we can assemble to toddler's bed and study table in the future) OR bedside (attachable) bassinet. Which affordable brand is good? 2) Baby diaper station - DIY from IKEA? Get a cot with diaper changing function? 3) Baby chair - any affordable and good brands? 4) Baby stroller - any affordable and good brands? 5) Baby clothes (baby girl) - buying new or get from 2nd hand?