Should invest all my money in ETFs at once or DCA if I get a chunk of money?

We just bought a house so we want to focus more on investing now (previously we just kept everything in a savings account as we weren’t sure how much we were going to spend on a house).

We have 55k in our investment account now, and just sold 40k of my company stock.

Should I invest all 40k in like VOO now or keep it in a MM fund and DCA over the next year? Does it matter?

Our goal is to try to save as much as we can in this investment account that can hopefully go towards a future house in about 10 years.