24M, portfolio allocation and timing questions.

I’m looking for general guidance on portfolio allocation and entry timing. I have around €500,000 available to invest in stocks, and I’m trying to decide both how to allocate it and when to deploy the capital. At the moment, valuations feel relatively high to me, so I’m unsure whether it makes more sense to: • invest a lump sum, • spread entries over time (DCA), • or keep some cash aside and wait for better opportunities or a potential downturn. I’d appreciate any perspectives on: • how people typically structure a portfolio in this situation. Please note that I don’t have much experience in stocks so Im not ready for leverage trading and overall much effort trading. I am open to any advices :) Thanks, appreciate it guyys🫡