"I can't invest properly until I have $500K saved."
You're backwards. Start now.
PNL's allocation works at $5K just as well as it works at $500K. The weights scale perfectly. You don't need massive capital.
Waiting to accumulate $500K means you miss years of 32% CAGR compounding. Start with $5K. Rebalance the same. Own the same percentages. Compound the same way.
At 32.19% CAGR, every year you wait costs you massively. Start now.
Your portfolio isn't about the size of your position. It's about the consistency of your allocation.
Start now. Size doesn't matter. Weights do.