Im not sure what my touring bike's geometry in terms of trail is. With that said...

I just rode a few days with rear panniers mounted on a front rack that has high and low mounting points.

70% of my total gear weight was in those bags and 30% was in a dry sack on top of the rear rack.

I found that it rode the same regardless of if the bags were mounted high or low. I could climb out of the saddle a lot easier than with a significantly rear loaded bike too. The front weight was stable and syeadied steering in both high and low mounting

Again, not sure what my bike's trail is though.