Thank you for the input, it was helpful.
I Plan on building kits beyond this, and I checked the specs for this particular guitar and it is pure mahogany. Almost pinkish when you get down to the base after the stain.
I think I figured out the order whilst browsing the internet last night, so that isn't my problem anymore haha.
Here's what I've done:
Sanded whole thing down to pure wood, filled huge gouges with stained wood puddy, bought Nitro in a can, behren's wood grain filler, have all of the hardware, and also purchased sanding sealer.
I guess the order doesn't matter, but what I'll do is
Grain filler
sand
sanding sealer
primer
Paint
nitro