I was searching for prices on primer when i came across this fourm at paint supply site,

The polyester primer is basically spryable bodyfiller.. SO apply epoxy.. then next day apply polyester primer.. You will see where you are going to need filler.. So you can safely apply the filler over the polyester primer ( read a product like Evercoat G2 ) and not concern yourself with sand thrus and building a sandwich of epoxy and bodyfiller which in my opinion would be a major issue all in itself!!!!!!!!!!

Once you block it straight with that.. You can apply your 2k and block that or go to epoxy.. That would be your choice at that point!!
Does this sound like a good idea? I thought filler could go over bare metal and epoxy ,if i'm wrong i would sure like to know, thanks for your time.