Stage 1's are usually like 160cc and require more oil then stock injectors.
This is not correct.
Stock injectors are split shots, and are some of the most oil-hungry injectors.
A-code singles are less oil hungry than stock splits.
Hybrids are less oil hungry than both.
In most cases... with correct application and absolutely correct tuning, just about any A-code and many hybrids do not need anything beyond a stock HPOP.
And I'm shooting for a little over 400 just somewhere in that range this is my daily driver so I want to keep it mild and cost efficient.
Ok... here's where things get tricky.
Do you want 400hp peak? Or do you want 400hp useable? There is a difference.