Incremental body and paint advise

I am going to hand sand my car to bare metal. Very solid car and no panel work and rust through issues. I do not want to put the metal through the sandblast process and have the time to do it by hand.

Since I want to protect the bare metal asap and will only work a panel at the time, is it okay to use Eastwood 2k epoxy primer in the spray can/bomb? Then later do my filler if and when needed followed by a building filler primer on the same brand of the paint to be applied?

Thanks.