Primer / Sealer

[aacorp]

Currently prepping my g16 for base/clear paint (PPG), and planned the following order:

1. clean
2. scuff with scotch brite
3. fill nicks/scratches with 'Icing', sand smooth
4. clean
5. tack
6. seal with DP90LF
7. color (shop line:mazda metallic burgundy)
8. clear (shop line)

Now that I've filled the blemishes with Icing, I'm hesitant about just going straight to the DP90LF seal coat. I would much rather shoot a good coat of sandable primer (K36) and give it a nice final dry sand with 400 grit paper.

1. Can I shoot another coat of K36 as a sealer?
2. Do you sand the seal coat?
3. Does the sealer color effect the shade of the color coat, ie; will the metallic burgundy look better laid over the light gray K36 vs the black DP90?
4. What spray tip is best for primer vs. base coat vs. clear coat (using a Devillbis HVLP gun)?

Will post pics of finished product! I'm spraying the golf cart to get back into the 'practice' of painting, as I have a few other 'projects' in the near future!