Currently I'm running the Essential Halfblood Farmer:
61o 61o 61o 61o 61o 61o 61o 61o 61s 61s 61s 61s 61s 61t 61t 61t 61t 61t 61t 61v 61v 61v 61v 63a 63a 63a 63a 63a 63a 63a
Any suggestions for what I should upgrade first? Or should I go to a rainbow FG farmer next?