your decision is already a good one. You don't have to split that $ 80 with any altcoins. because from btc profittalble it is clear. you just hold or sell it, it will still give you a good profit. Instead of giving the entire portfolio to altcoins that you are not necessarily sure of the future benefits. while bitcoin will not discourage you.
Bitcoin is sure the best option for him, selling the $80 worth coins to invest in altcoins wouldn’t make any sense.
Moreover most of the altcoins are seeing a huge increase as Bitcoin, except a few of them that seems to be really wilding out.
I think a few that has been increasing heavily includes Tron, Vechain, and some DeFi. Bitcoin is good and from the look of things Bitcoin might still be going for more increase because it is not going down anymore, it keeps breaking new levels every month and we don’t know to what extent it might reach soon.