Rebuy or wait

I know you’ve heard this a million times and I’m sorry u have to hear it again but i made some profit with micron selling at 930 now I’m looking to reenter at 800-850 mark. How realistic do you guys think it has a chance of happening because i am thinking of investing 20k into it or else i was thinking of taking that 20k and splitting it between

Nvda-5k

Iren-5k

Rklb/asts: 5k

Nbis:5k

What do you guys would be the better play. Thank you