Honestly I'd go with the ECS turbo muffler delete route and not bust into the EQT charge pipe. After doing mine that way I'm having second thoughts and might replace my EQT charge pipe I ruined and install the tap into the turbo muffler delete.
Tricky with the EQT TMD - I was originally planning to do that but it's really built to maximize ID, leaving really thin walls, making tapping challenging.
I'm pretty happy with my install so far, though I added the adapter on the other side of the hose to you - near the TMD side. Yet to put it through its paces on track...