For Mobile Ad Hoc Network (MANET) applications which involve large propagation delays and/or directional antennas, a Time Division Multiple Access (TDMA) Medium Access Control (MAC) is a resourceand bandwidthefficient solution. Meanwhile, clustering is a solution to the scalability and high mobility which is commonly required by MANETs. Here we develop a system which combines a TDMA MAC using directional antennas with the Multi-Meshed Tree (MMT) algorithm, which handles clustering and routing tasks. Some of the benefits of this combination include being able to synchronously schedule all intra-cluster routes as they are formed, being able to optimize the intra-cluster schedules for low latency, and being able to calculate these schedules with knowledge of only the intra-cluster topology, which is already maintained by MMT. We first analytically determine the end-to-end latency under various cases, and then confirm these results for several cases through OPNET simulation. Additionally, we note the high degree of slot reuse which is possible due to the use of directional antennas, which is demonstrated by the simulation results.