If i want my extreme set to last 1 bunyip, when do I repot?

Boosted level's last 1 minute (without the berserker curse on) and Bunyip's last 44 minutes.

 

So with one 4-dose pot of extreme's you will want to wait 11 minutes (11 dropped levels from your max) until you repot.

Thank you :)

I wouldn't use an extreme set, I'd use xatk, xstr, sara brew. After 11 minutes, you can drink a brew to take your stats down to around your base level (ex. 99/99), then drink your xatk and xstr. Brew is only 3-4 defense levels lower than xdef, costs a [cabbage]load less, and heals some 140lp, even over your max, which is very useful.

 

EDIT: If you have a 99 stat, drink the brew before you hit 112 and you'll be fine and suffer no penalties.