hcc23,
I first bought the Weatronic DV3 and 2ea Micro 12 receivers for the best RF connection and the promised telemetry. The RF link has been flawless and the telemetry too expensive and too long coming. For that reason I bought a Taranis to try out telemetry. I have been flying the Taranis for approx. one year and have not had a single malfunction. I have airspeed and altitude telemetry and it works very well. I now have a DV4 Tx module and the adapter to plug into the Taranis. I am going to try the use the first 8channels for the DV4 and use the next 8ch for the Taranis RF and the Taranis telemetry. The Taranis telemetry is Open Source so you could use it for your project.