OK, I'm going to say this is completely unnecessary, you should just leave it alone and drive it but since it'll make you feel better, it may be worth it, and it's not my money. Here's my advice: Have the shop hone the block a couple thou to clean up the scratches, send the pistons out for L2L and reassemble. I think there's more chance of **** going wrong doing this than with leaving it alone, but it's not my stuff. I assume that this shop has suitable tooling, ie torque plate and a proper hone that can correct taper and out of roundness. If the shop doesn't have a torque plate and/or gives you silly looks when you mention cylinder taper etc, just leave it be. I doesn't need to be a diamond hone, but that'd be nice. I'm trying hard to not be an asshole, but shops using tools from the pre-computer era are not what you want for performance engine building.
I'd rather spend the $ on porting:) S/F....Ken M