She does look like a great project!!!
I agree that you should save on the media/sand blasting. The fire boxes just seem to want to rust. What I've gone to is treating the whole exterier like a cast iron pan. I "paint" bacon fat on the fire box every other time I cook and on the rest of the outside when ever it needs it.
If you end up cooking in the rain, you'll find that you are going to need to coat the fire box right away or you'll be back to brushing, sanding, & greesing it again.
You've got a great cooker there and if you have any questions just ask us or give Ben a call down at Lang.
Good luck and keep us informed!
Race Fast, Cook Slow, and Enjoy Life!
If it don't come off a smoker, it's just a side dish!
Lang 60 Patio (The Mistress), Black Stainless Lang 36 (Little Princess), Large BGE (Ramona), Big Green UDS (Cottage Cooker), Brinkman SnP Pro (Little Bubba-Retired), 8 Burner Gasser, 3 - 22.5" & 1 - 18" (circa 1975) Weber Grills, & a Weber Smoky Joe.