If I'm to reply based on your topic, I'll say that coins built on Ton blockchain are currently trending both listed and pre-launched projects but I'm not advising you to invest on them since I don't trust most of these new projects. I would love to say that accumulating more Bitcoin is not a bad idea but it seems you've made up your mind on adding Alts to your Portfolio. Well, Solana is not bad, it's a good Alt with great potential and the price it's attained recently has made lots of investors i know to consider it but I rate ETH (Ethereum) above every other Altcoins infact it's the next coin to Bitcoin and one can't think of adding Altcoins to their portfolio having ETH in mind, why i consider it good is because it's shown great potential and moving with Bitcoin trends moreover it's good for both long and short-term investment, BNB shouldn't be left out too, you can also Dyor about Monero (XMR) but if you feel like adding meme coins to your portfolio too then my suggestion is DOGE and PEPE.