[GordonS]

> I've decided to focus purely on conversational mandarin, and skip learning Hanzi (characters) entirely

I initially did the same, but for curious and started learning a few characters too. It actually proved to be beneficial to my speaking too, as the characters provided a kind of visual mnemonic in a way I hadn't expected, helping me to remember sounds and tones.

And of course when actually in China, it's really beneficial to be able to read a menu, or at least have an idea of what you're ordering!

Absolutely do what works for you, but I'd suggest trying a few to see if you get the same kind of "visual reminder" benefit I did.