Front brake line

[NC67Chev]

A few years ago, I changed all of my rotten brake lines out. The lines I went with were stainless. I recently changed to disc brakes on the front using the same lines. The brakes work great, but I'm having issues getting one of the flares to completely seal. In any case, I'm to the point of making a new line from the prop valve to the front tee fitting. The prop valve I used is one of the universal ones that have 2 separate ports for 3/16 lines to the front. I plugged one port and used an adapter to on the other one to step back up to 1/4 line, which goes to the front tee fitting and then steps down to 3/16 to each front wheel.

My question is this....Am I going to create any issues with using 3/16 line from the prop valve to the tee? It would be nice to eliminate the adapter if possible, but I can live with it if there's a reason not to do it. Thanks!