Sorry, I wasn't super clear. The Seas Neo that you linked USED to be the defacto driver for your sort of application. I generally have a Seas boner, but that driver I am not terribly impressed with. The Evil tweet would be a better choice.
As for the mid, I haven't played with the SI TM65s but am generally not interested in trying. Large Xmax drivers playing higher in frequency is something that is far from trivial to design around and the SI crew does not have a ton of engineering measurement capability at their disposal. It is possible the design is fine, but it is also possible it is a wreck. Taking subjective internet reviews as the gospel is also horribly frightening as the average car audio enthusiast can't hear crap.
If I were going to spend SI money on the drivers, for your application I would recommend the Seas ER18. There are other drivers that do other things better, but ease of integration into your system is key and that driver is super easy from that domain. (ie, wide and flat frequency response without anomalies). The Evil mid is priced real aggressively for what it is though so you aren't paying Norwegian markup like on the Seas. The CA18 even integrates easier, but you lose some mid clarity that the ER has.