Pros/Cons of this strat vs. standard high exp:
Pro: Do not need to kill Hau's Raichu on Hop 5 (loses ~25-30s)
Cons: OHKO Salazzle much worse, grass trial pokes worse ranges (not too important)
Make the decision to go for this strat depending on whether you will go for this range:
Salazzle OHKO Range:
x / 9–21 / 4-			51–53			5 / 16
x / 22–29 / 5–8			54–55			8 / 16
x / 30+ / 9–16			56–57			12 / 16
x / x / 17–25			58–59			15 / 16
x / x / 26+			60–61			16 / 16

Other range:

Drowzee Scald with Mystic Water:
30- / 5- / x			43–49			0 / 16
31 / 6–13 / x			50–51			1 / 16
x / 14–22 / 5-			52–53			4 / 16
x / 23–26 / x			54			6 / 16
x / 27+ / 6–13			55–56			9 / 16
x / x / 14–22			57–58			12 / 16
x / x / 23–26			59			14 / 16
x / x / 27+			60–61			16 / 16

Scald* always kills.

If you decide to go for this strat,
Rare Candy x2 right after Lillipup/Growlithe trainer to L24.
Rare Candy x2 to L28 right before Lurantis instead of right after Salazzle.
Rare Candy x2 to L33 right before Molayne. No Raichu EXP necessary.