I refer you to Chris Meddings brilliant review of the kit for questions around accuracy.
I have chosen to ignore some of the inaccuracies and as a basic statement the kit goes together with no real traps. If you want the tank to really be a Mk2 however, at the very least you need to make the changes to the engine deck and the drivers position. When it came to the turret, I feel you are better of using the Amusing Hobbies turret and modifying the fume extractor of the gun barrel. I took this path because I wanted to build the Carnarvon and could therefore avoid the correct work required on the Dragon turret. My Conqueror is essentially a combination of the Dragon hull and Amusing Hobbies turret, tracks and some hull details.
Looking forward to see your efforts with the PE sets that will definitely give the kit a needed lift.