I'm gonna be topping up 5k ingots around this week for events. My question is, should I hold onto the ingots on my acc, or go straight for lucky board when rebates come around the 6th? Or stack up on my income (coupons and ingots) from coupons alone i've collected a good portion of medium threads, but I'm wondering if I should extend it completely, also getting refine runes in the process?