Talk me out of buying a 3rd Spark

A user on reddit.com's dev_community forum is considering purchasing a third Spark, asking for advice on whether it's possible to run DeepSeek 4.1 Flash on a 2x Spark cluster. The user questions if the "gurus on the DGX Spark forum" will find a way to achieve this, or if a 3 or 4 Spark setup is strictly necessary for the operation.

The user's specific question about running DeepSeek 4.1 Flash on a 2x Spark cluster, compared to a 3 or 4 Spark setup, highlights a practical scaling challenge.