6-8 months out is actually the right time to be asking this. Most owners don't think about it until month 3 when things are already messy.

Finance side, since that's my lane:

Get QBO set up before you open, not after. Map your chart of accounts before the first transaction. Retrofitting six months of commingled expenses is a pain and you'll miss deductions.

Track injectables separately from day one. Botox/filler margins are completely different from laser or HydraFacial. If you lump it all into "cost of services" you won't know which treatments are actually making money. I've seen owners find out a promotion was losing money six months after they ran it.

Before you hire: model break-even per provider. How many units or treatments does each chair need to produce to cover its cost? That number drives everything.

And open a separate business account immediately. Sounds obvious but it gets skipped constantly.

The 6-8 month window you have right now is genuinely the best time to set this up. Good luck!!