So some good news, I am successfully printing PLA.
The culprit was not so much the heat but the PLA itself. I will post a few pics with a thread dedicated to printing PLA.
PLA is known to stick to and gunk up majority of all metal hotends. i.e. ed3 etc.
After a load of failed prints, success, odd failures, slicer settings ... the solution that ultimately worked was "seasoning my hotend and/or oiling. There are loads of info regarding PLA jamming.
Search "Seasoning Hotend"
You take about 20cm of PLA wipe and lightly coat it with some veg oil, canola, peanut, or olive, etc. get your extruder/hotend up to 230c and feed it through ... hear a few pops etc, next feed through 10cm of regular uncoated PLA, repeat again and that's it. You will have some light oil that will burn off and not affect the print much or at all, however use gluestick afterwards. This supposedly burns into the brass metal etc keeping the sugar like sticky molecules of PLA from sticking to the walls.
Some people use dust/oiler couplers 24/7 for PLA... this is how bad it is. Which i think I might end up doing. I repeat oiling overtime i switch Spools.
No jamming and no extra fans. I did modify the Fan that is mounted on the rear and taped up the sides. i added a molded duct to direct more air towards the 6mm hotnend bolt/channel.
The front clip fan should be added to do closed printing/ also provides better bridging. Will try to get a modified clip front fan duct that directs air closer to the print/nozzle.
Printing with PLA vs ABs really shows Davinci's shortcomings. You can see all the imperfections. ESP Z banding GAPS.
Yes PLA is here to stay.