I look at this as two possible stages in building the business.
With your own licenses, you take on the cost and responsibility of the regulated operation. That includes the application process, financial requirements, compliance resources, reporting, examinations, and maintaining the licenses after approval. It can make sense when the business has established demand and sufficient resources to support that responsibility.
For an earlier-stage business, I often recommend exploring the agent or authorized-delegate route first. You work within a licensed principal's permitted operation while building transaction volume and learning what customers actually need. There will be commercial costs and operating restrictions, so the comparison needs to include both.
The arrangement must cover your actual activity. For example, Texas allows an authorized delegate to conduct the activities covered by its agreement without obtaining its own license for those activities. Services outside that agreement require a separate analysis. Texas authorized-delegate guidance
Before choosing a principal, I would confirm the states and services covered, the permitted customer types, how compliance responsibilities are allocated, and whether the proposed transaction flow is acceptable. A partner's license list alone does not answer those questions.
There is no single transaction-volume threshold at which every company should switch to self-licensing. Compare the ongoing partner costs with the full cost of owning the regulated operation. My preference is to make that decision from a functioning business and realistic numbers, rather than spend heavily on licenses before the model has been tested.