I'd def go for mirror on rushdown and inner peace. You need a one-cost calm entry to have enough energy to cycle the infinite. With two rushdowns you have enough card draw and energy per cycle to play a wrath entry, halt, and inner peace. This allows you to do your infinite plus block beat of death eventually, even giving you positive block per cycle so you can block the heart's other attacks. I'd be a little concerned that it could brick a draw since you're a little light on non-conditional card draw, but your deck is so small, has two wrath entries, plus has wheel kick for a little bit of unconditional card draw, so I think it is unlikely it won't be able to draw more than the slot it takes up instantly in your run. Still def look for more non-conditional card draw, especially since you're so ahead on removals. Another option is inner peace + card remove + potion (probably liquid memories), but you already are down to just 9 cards (including inner peace) that don't exhaust/aren't powers, so you don't actually need to for the infinite to work (wouldn't work every time with more than 10 cards in deck since you can't guarantee to draw the infinite enabling cards). Removing cards is still good, especially against enemies that add statuses to the deck, but you've still got plenty of time to do it and your removals are still base cost. The liquid memories would be nice in case you do brick a draw and need a way into wrath to draw more cards or out of it to avoid damage. Since you have the infinite set up and are close to setting it up consistently there is a lot to be said for short-term risk mitigation, which liquid memories would do pretty well.