Rust preventative during build

[jlwdvm]

Since my free time is limited, I work sporadically on my 69 firebird project. I'm trying to get it into primer before winter since all of the steel work is done. I don't want to mix up 100 batches of SPI epoxy primer to get everything primered along the way. My plan is to get the door jambs and trunk in primer first, then install the fenders, hood, trans am spoiler, and trunk lid. THe car currently has a quicky coat of epoxy primer on it that the previous owner applied that needs to be stripped (most of the steel work was done by the PO). Once the body panels are stripped I'll primer those and be ready for filler work. My question is: since I won't be stripping everything and primering the same day, what can I apply to the metal to keep it from flash rusting? Will a thin coat of WD40 work. Everything will be wiped down with SPI water based wax and grease remover prior to epoxy.