Coinbase - use USDC in normal USD pairs.

On Coinbase, USD and USDC are 'unified'. This means that you can buy and sell both USDC and USD pairs with your USDC balance.

***Caveat*** I would like for this to be in its own separate account, one that we can choose in this dropdown here (see image)

If separated like this then segregation of manual trades and bot trades are easier if one still wishes to not co-mingle signal bot and manual trading orders.