In need of advice on surface prep
I am starting a restoration project on an old barn on my grandmothers property, it's not in bad shape, but doesn't exactly look new either. It was built in the 60's and probably last painted in the late 60's early 70's. So I am assuming it contains lead paint. But, my question is about the surface prep, I was out there today attempting to scrape the old paint off, but it was almost impossible to do. I was out there for a couple hours and I think I scraped one vertical board to bare wood in that time. So, the surface isn'tpeeling, it's actually holding together well for its age, but it's dry, cracked looking, I believe 'chalky' is the term. I am wondering whether there is an alternative to scraping (power washing, stripping chemicals) anyone would recommend for this situation. Or is getting down to bare wood even essential if the paint isn't in terrible condition? Would a coat of primer and a coat of paint turn out fine? Or two coats of solid stain do better? I'm basically a newby at this whole construction restoration thing and just need advice, thanks.
here is a link to a picture of the barn (yes it is actually pink, the color is not faded, apparently it is a mixture of who knows how many gallons of paint, I guess it was expensive back then lol)