Thanks for the help and the insight re: hash mismatch. Saved me much time looking for a solution!

Update:

I ran sfc and looked at the CBS.log. Looks like I'm lucky. Only one repair problem appears related to .Net Framework 4

2017-11-26 20:43:53, Info CSI 00003991 [SR]...

@Kyhi

/********
* Edited Original post edited as I overlooked instruction to use Option 16 to download compatible source media. Some of my original problems may have due to incompatible media
*...