You should take a look at the average turns you play in order to determine the optimal number of heals. With this build, you're thinking of lasting more than 10 turns (after that, your opponent can easily control the field), or you'll need more
![Life :life](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/life18x18.png)
quanta. It's a tricky trade.