X Head Assembly & Installation - Comments Requested

No get the proper head bolts. The shanks have specific shapes. There is one head bolt hole on each side that has to have a narrowed shank to make sure the proper oil flow gets to the head; that flow actually goes around the shank of that specific head bolt in each head on its way to the rocker shaft.
$80+ for bolts? Am I finding the correct ones? Head Studs / Bolts / Washers or http://www.classicindustries.com/product/mopar/parts/mn2088.html/

When the local shop inspected your heads, did they say anything about the surface roughness? If not, I personally would not bother. There is a certain range of average roughness (Ra) that is acceptable. (For example, 60 to 100 is the range recommended by Felpro for their Permatorque on iron heads.)

I bet some guys here could run their thumbnail over the surface and get an idea of the Ra from long experience. (But I know I couldn't.) It is about impossible to assess simply from an internet pix.
They said the heads were in A+ shape. I didn't inquire further. The shop is well known around here for quality work so I trust their judgement. I just wish that "cleaning the heads" to them meant clean up the mating surface.