Checkbook LLC or a direction letter for every transaction inside a self-directed account

Consider a small note and lending position run out of a self-directed account for a few years, where a borrower needing a partial release on a Friday runs into a custodian's four business day document review queue. The checkbook route, for context, is where the IRA owns a single-member LLC and the LLC holds the bank account, with the account holder signing as manager of the LLC on behalf of the IRA so funding and paying expenses happen at their own speed. Whether that structure holds up depends on how it is set up and operated, and that is an attorney question specific to the facts involved, not something a template can settle. The real tradeoff is in the failure mode of each approach. Custodian-directed is slow and every transaction costs a fee, and that slowness can cost a desired loan outright. But the custodian functions as a second set of eyes, capable of catching a direction letter that names the wrong entity before it becomes a mess to unwind. Checkbook is fast and the fees drop, but it removes that guardrail entirely. Every payment out of that account becomes a decision made alone, and the prohibited-transaction rules do not care that the decision was made in a hurry. One personal expense run through the LLC account by mistake is enough to require paying someone to fix it. The honest framing is speed with no supervision against supervision with a four day queue, and the right answer depends on how much the account holder trusts their own process under time pressure.