With the fed cutting rates soon, when is the right time to re-enter the market?

Hi.

I have a few hundred grand in dry powder that I pulled out before stocks dropped badly, but they have recovered a bit. With the fed cutting rates soon, when is the most suitable time to put it back into the S&P / Nasdaq ?

Thanks.

Edit:

I forgot to mention that I was 100% in NVDA because I bought $40k years ago, and it became all of my portfolio. I absolutely should have sold – I sold at $136.

I'd like to buy a house in 6 months, but I'm ok with the fact I may not be able to sell if it drops and I have to hold off. I just hate leaving my money out and missing out on $$$.