Upgrading front speakers - where to route ?

Hi everyone!
I have not, and probably will never become, the worlds greatest car audio head there is, but a black week sale led me on the journey to upgrade the OEM speakers.

Since I only want to get a little more out of things without going over the top, my plan is to stick to the Amundsen+ (is only 4x14W RMS ?) and just swap speakers. A set of Hertz Dieci 6,5" component speakers found its way home, as I was okay with their price point, they rated well on sensibility (which is smart given the 14W RMS) and had a OK range coverage.

Now tweeters are fit into the unmounted A-pillar covers, and I cut off the OEM connectors to reuse with the Hertz. Because the stock tweeters have an integral filter (capasitor), I assume their supply cable is running in parallel with those to the stock mid & low range speakers. Thus it would be no good to reuse for the Hertz, as split cabling is needed. Looking at the door-to-chassis transition, I wonder what would be the better routing as the connector in A-pillar seems to take up most of the available space there. I did note an additional, smaller, grommet below the big one that might be of use.

What would you recommend as solution for getting a speaker signal from the doors to the tweeters ?