Roth IRA - Question about availability (for trading) of funds from sale

I sold some common stock in order to play some overnight volatility (I'm aware of the risks and rarely do this). Do I have to wait T+2 days for the funds to become available for trading?

I didn't intend to sit on the sidelines that long and I'm really hoping I can repurchase the same common stock prior to the funds officially being settled.

Edit: It looks like I'm looking for "limited margin" trading, as I don't intend to use margin other than for entering a new stock position prior to settlement of a prior sale (in other words, to avoid a Good Faith violation). Is this feature automatic on a TD Roth IRA, or something I need to request/apply for?

Edit 2: I requested margin trading via the TD website and my request was approved. It says it will be added to my account in one business day (approved prior to 9pm EST). Here's hoping margin trading gets added to the account at the beginning of the day.