It's a good strategy. I was contemplating about beating Ruo but as it'd cut off my capacity of using the pill's feature in the early-game, and as EXP is scarse in Trash difficult, I opted to save my first death to Bohai.Losing to Ruo got me to 20. I then got zapped by heavens twice, then got killed by mo long (who is stronger without infusion). Then I advanced with Mei's pill, and died again fighting Long Chen's army.
Anyway, I will try it later on.