How Should I Use My 1.5x EXP Coupon?

I do the same, mostly for money from krexel, gloves from DIPQ. HoH is faster, but boring as hell. DIPQ gives me around 15% at lv183, takes 8 min, i can do ~7 in an hour. I thought Krexel gave 10.5m exp, ill check tomorrow. One thing to note is Krexel resets every 24 hours, not at midnight.