Depends on your risk/reward profile.
From a token pov:
BTC: less risky, but probably less upside.
Altcoins: more risky, but if you choose the right one, higher upside.

From an activity pov:
Holding tokens (aka just buy and wait): after buying, no actions required.
Trading: requires a lot of time each day.

I would invest 50% in buying BTC and just hodl it.
The other 50% you can play around; hodl for a medium while some alts and/or trade the rest of your money to see if you can get 10-20% ROI per month.

Disclaimer: this is not investment advice, consult a professional advisor :-)