Where to park 20% of my nw

I've been investing since 13 years and my nw is all in equities. Now I've just sold a house a I'll receuve the money next week (250k eur) which represents 15% of my total nw (i wrote 20% in title but made a mistake). I want to invest it in equities as long term is the only thing that makes sense for wealth accumulation but what instrument would you park it it to then invest it say within 12 months? Of course if I see a dip of 10% ish ill dump it all in, if not dca slowly. I never really had so m