I don't know about Litecoin, but I would strongly advise against Sui.
Sui has not only bubbled over the past year (and already lost a lot again), but it has also one of the
worst tokenomics of all smart contract platforms (See also
my note about their unlock schedule).
60-70% of the supply of the first year were allocated to the founders and their friends (foundation etc.)! This is much worse than Ethereum, Cardano and other competing platforms.
And it means above all one thing: there will be continuously enormous selling pressure from the founders' club.
Sui could go up again as it was hyped a lot, as some of the founders' tokens will be unlocked relatively late. But even in this case, if I had a bigger bag I would take profits in the next cycle, not later.