You can swap directly in an instant to see your profit as liquidity will show up once you hit the swap button, just make sure you have enough gas fee for the transaction. Using coinbase is reliable too, same with other cryptocurrency wallets like trustwallet, metamask and other trusted applications that caters swapping.
That's right and the platform you mentioned above provides swab services too. I often do this using metamask which is simpler, easier and faster without needing to connect here and there.
As for gas costs, it depends on the network, if it's busy, of course it's a bit expensive, but if you use BSC, I think it's still quite standard.
Just OP executes if he wants..

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