No, I definitely do not ascribe to Markan priority for myriad reasons.
And the astute Ben C. Smith gave some new dependency reasons that point against Markan priority.
BCHF
Presumptions of reader knowledge in Mark
Ben C. Smith - Feb, 2020
http://earlywritings.com/forum/viewtopic.php?f=3&t=3818
And since Ben is posting on a skeptic site, I expanded it a bit from an evangelical perspective here, and include the Galilee resurrection appearance question, that indicates Mark depending on the publication of Matthew (and possibly John).
PureBibleForum
Mark's dependence on Luke - the end of Markan priority - plus support for the traditional ending
There is a lot of error built around Markan priority theory. We will leave that open for discussion here, and in the next post show why Markan priority is a totally false theory. As a bonus this adds to the overwhelming evidences for the authenticity of the traditional ending of Mark. And I...
purebibleforum.com
And I think you are overstating the issue of "verbal coherence". When we have scholars who say there are many linguistic indications of our Greek Gospel of Mark being translation Greek, either from Aramaic or Latin. And remember, some theories are of Mark putting forth two editions, as above:
"then was by the same turned into Greek at Aquileia"
Bellarmine also has a second spot:
St Robert Bellarmine: Chapter Fifteen: On Vernacular Editions
Book Two: On the Hebrew, Chaldee, Greek and Latin Vulgate Editions Chapter Fifteen: On Vernacular Editions There is a controversy between Catholics and heretics about whether it is necessary or at least expedient for the
sensusfidelium.us
"For there are those who reckon that Mark’s Gospel, as we also advised above, was written at Rome in Latin by Mark himself, and was afterwards by him translated into Greek, about which see Damasus in his Life of Blessed Peter, Adrianus Finus Scourge against the Jews bk.6 ch.80 and bk.8 ch.63, and Peter Antonius Beuter note 90 on Sacred Scripture."
Please note that there is just as much an imperative to "prove Mark was first written in Greek" than in Latin.
Markan priority has entangled many textual critics, along with the Greek-Onlyism myopia
.