I am about the same point you are....
I just have to add a few small parts here and there and a bit of clean up and I will add my primer and then paint.
Just curious,,for the base coat I intend to use Tamyia XF-63, German Grey. How about you.
After that, i will do a hairspray, white wash technique...(first time). then apply the rest of the weathering using dot filitering and Mig products.
In my build I have most of the equipment off the tank and will paint seperately. I have also not attached the exhuast tower and clamps at the back and spare tracks at the front..... as I want to ensure the paint gets in the area that will be covered up. I feel that it is important for depth. After the German grey is on, I will apply the hairspary and white.
Of course the wheels and tracks will also be done seperately.