[X] Flowing Ivy Elixir (Gold)
[X] Heal a beggar
[X] Suffer from Melancholy
[X] The Poison Phoenix, Zhuge Xin
Yeah, this seems reasonable. I am also tempted by the White Blooded Qi Pill, for sale as well as our own use, but Flowing Ivy Elixir is a good choice as well.
For weaknesses, I actually really don't like this one but I hate all the others more because of how petty they are. I wouldn't mind a flaw like selfishness, anger, vindictiveness, or being deceitful if it was less extreme and petty. Like...even by xianxia standards the stuff on those flaws is some petty hateful bullshit. Deceitfulness is probably the least so, but even on that one actually following through on our promise costs us basically nothing so we're conning someone just to con them, not for any actual purpose. And all the rest are mostly much worse.
Like 'I once destroyed an entire family' level of vindictiveness would be fine if the family actually did something real to provoke it, but crippling people for bumping into you is some crazy shit. Or murdering someone in a fit of rage after an actual insult, sure, I could see that...making someone homeless for accidentally serving you a bad drink? That's legitimately insane even by most cultivation setting standards.
All of them feel like there is no lower bounds, like any tiny little thing will set our protagonist off. All of them will have our protagonist committing atrocities over a cookie. It's wild.