Here's my 2 cents...mostly because I'm basically cheap. 
in 2015, I wired up a Duraspark I (red strain relief) per George Pence's diagram when my MSD failed. Installed along with a remanufactured Motorcraft/Duraspark distributor with MSD Blaster SS coil. Spent some time to get the advance curve where it needed to be. No ignition issues since. I can't address your TFI distributor and coil question.
Bought an off-the-shelf fuel pump in 2001 that's still pumping. Brand unknown.
Replaced an old Edelbrock (AFB) carburetor with a Summit Carb 600 cfm carb in 2019. Had to adapt air cleaner assembly for everything to fit under the screen. Summit carb worked great right out of the box.
I believe my 351C is pushing 375-400 HP. Nothing wild, just healthy. Has a Crane HMV-278-2A cam, and the Edelbrock heads boosted the compression ratio up to around 10.5:1.
Weather permitting, I put 1,500-2,500 miles a year during our relatively short driving season going to various cruise-ins with my car buddies with some sporting driving from point A to point B at times. 