Good work on getting this up
QC decided that the main set should look this:
name: Physical Tank
move 1: Scald
move 2: Ice Beam
move 3: Psychic / Thunder Wave
move 4: Slack Off
evs: 252 HP / 252 Def / 4 SpA
Ice Beam was deemed non negotioable since you needed the immediate damage against things like +1 Salamence, +2 Garchomp, etc.
The Choice Specs set should probably look like this:
move 1: Surf
move 2: Fire Blast
move 3: Psychic / Psyshock
move 4: Trick / Ice Beam / Grass Knot
item: Choice Specs
evs: 252 HP / 4 Def / 252 SpA
Fire Blast is too important to get slashed imo, and isn't as necessary since you're 2hkoing most of the dragons (sans Lati@s & Hydreigon)
The TR set gets a yes from me, since Slowbro is basically almost identical to Slowking when it comes to TR sweeping.
Feel free to use ScarfWynaut's original skeleton
to beef up your AC and whatnot.