chromabase

hi guys, I sprayed a car the other day, checked it with my light and it looked fine..but when I cleared the car i stumbled too close to the quarter about 4 inches from the door and put a nice run in it that drug the basecoat a little so it needs a re-do. I'm no pro, but usually what I'd do is...

can I spray a coat of spi intercoat over my blend panel, then throw Nason over top, or no? I usually use Nason on cheap jobs and bump up to chromabase for others, so can either of these be sprayed over spi intercoat? Also, would blending a solid red be challenging at all? I'm assuming since...