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Thank you for getting me to the point where I actually started looking into the Quest Potions.
Nice to see you got some good SPT payouts, I would not dump all of them and at least stake part of what you earn delegating it to @monster-curator. This will both give you daily passive SPT earnings from curation rewards and increase your SPS airdrop.

Regardless of what you do, Ggood Luck!

How much i need to delegate for a good income

It's linear and returns are about 0.08%-0.10% on a daily basis. It's just like everything a matter of consistency and patience. Add a little bit each day and it all compounds over time.