Patch 8 Shadow 6/6 Sorcadin Leveling Suggestions?

It seems to me that it's common notion that 6/6 Sorcadin with Shadow Scratch, Shadow Blade and Booming Blade will be fun and useful in upcoming patch.

But everybody speaks about final 6/6 split and what about actual leveling process? I can see quite a few possibilities:

  1. Start as a paladin with 16 Str/15 Cha, get +Cha from Hag, go this way up until level 6 and then respec to 5 Pala and 2 Sorc;

  2. Start as a sorcerer with 14 Dex, 16 Con, 17 Cha, go Sorc up to Haste, go with Pala from there;

  3. Go with Pala up to level 7 and then respec to 5 sorc/2 Pala for haste and sites

  4. Go Pala up to 10, then respec 5/5;

  5. Sorc up to 8, then 6/2 with Paladin;

  6. and so on.

Worth noting that starting with sorcerer makes dealing with Hag and Shovel much easier.

I think the only possible way without respec is too start with Shadow Sorc, but what will be the smoothest one?

Also, for the final split, who should be first: - paladin for armor proficiencies or - sorcerer for Con proficiency?