How long can I make a phone last if I only have 1.14 GB of storage on it?

I don't plan to download many more apps (definitely not any big gaming apps), I don't think I'll have to download any pdf's, and as soon as I see my photo gallery building up, I'll transfer the photos to my Google drive instead.
EDIT: I just realized there was an app I can live without, so now I have 1.22 GB of REMAINING space on my phone.