I know it's a little late, but if it's a fair weather vehicle, them I'd definitely go with the BG/Americana combo.
Layering that combo over the Machine Sealant will give you the best of both worlds in terms of protection/depth/shine, but it's not absolutely necessary.
MSS is better suited for DD-type vehicles, ones that see all types of weather and/or don't get parked in a garage.
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