So, once you're in your Mining Barge and you want to keep heading toward maximizing your yields, you need to look at two things: Exhumers and Mining Crystals.
Exhumers make up the heaviest yielding miners (short of the Rorqual's Excavator Drones) and the T2 Modulated Strip Miners utilize crystals to improve mining performance. In fact, without crystals, there's no point in using T2 strip miners. This skill plan will push you to Exhumers first, then to the requirements for the T2 crystals. The only requirement here is Mining Barges V.