I like to reroll so I've done the Marje quests a dozen times or so. I like the rest of the game on PotD, just not the initial few encounters.
I hire a hunting bow + war bow Cipher as soon as I get into Port Marje for Whispers. You can also do Druid for charm beast but I like dual Saber Swashbuckler Eder and Cipher provides Phantom Foes for him and the acc bonus from the stealth Wyrm pet. I get Xoti, do all the Port Marje quests, talk my way to the wise teeth necklace, fight the xaurip encounter, and I hit level 4 right as I get to the digsite. Cipher gets replaced by Serafen once the initial segment is over.
I do Gorecci by entering from the south (leave the port from the exit where you initially entered), sneak across the map for the easy conversation check, grab the necklace on the way out. I've done the fight the way others are suggesting but I don't find it enjoyable so I skip.
For the digsite, go north from the entrance, down the ladder, save, walk someone to the edge so they get spotted from below, and you'll aggro half the group. I skip the drake fight because I also don't enjoy doing it.
You might also want to try an easier build for the segment just to get a feel for doing the run. For a similar-ish playstyle, I found Devoted/Helwalker Brawler to have a very smooth initial segment. Devoted weapon choice doesn't really matter for the initial segment, I just like the extra pen on the fists. You're mostly getting Fighter for Disciplined Strikes, Confident Aim, and Penetrating Strike.