With the following criteria...
1) Make spendable (can't use it to trade) $5,000 usd net a month.
2) Daytrading full time.
3) No other means of income (can't sell my service).
*4) Starting with $15,000.
5) Trading all crypto (not just btc).
all these are valid arguments but with 15k capital why badly needed 5ka month profit? is this how expensive living in your country?
5ka month is huge amount for normal living unless you are living in semi luxurious way.
* If it's not possible with $15k, then what's the minimum it would be possible with (of course this is considering this is the only hindrance).
Minimum cannot be recorded but at least you can try earning 1-2k a month is enough, remember that the risk is still there so things may happen that instead of earning you might lose.