Calculating the 1% rule on a BRRRR

[Justin Young]

This is probably a dumb question, but just wanted to clarify my thinking.

Say for instance I have a property with the following data:

Purchase Price: $50k

Rehab: $20k

All In Total: $70k

ARV: $100k

Monthly rent: $750

Money left in the deal after 70% refi: $0

When calculating the 1% rule, should I be doing that on the ARV or the All In Total? Am I missing something else here?