Tony, 64nailhead hit it right on the button...paint and supplies are too expensive! If I'm recalling your plan correctly, you won't be applying base/clear until spring but, in the meantime, will be body working and prepping each panel. Here's what I'd do: metal repairs/bodywork, apply 2K primer, sand with 400-grip, and stop to move on the next panel. The 2K primer is robust enough to withstand the months of exposure in-between.
Once you've done the whole vehicle and are ready in the spring, get what is commonly referred to as painter's paste (
https://www.3m.com/3M/en_US/p/d/b40072358/) to clean and scuff the 2K primer surface...use maroon or gray scuff pads. The painter's paste is like a soap and will remove any contaminants before you apply your sealer--according to manufacturer's recommendations. Once the sealer flashes, you can shoot your base/clear coats.
Lastly, stick with one brand or line of primer, sealer, and base/clear.