You could qualify for MT with only one Cleric level if you find a way to cast a level 2 spell (Heighten a Cantrip with Earth spell, Versatile Spellcaster might work with spontaneous Cure Light Wounds, etc.). Do the same with the Wizard side and you could go Wizard 1/Cleric 2/MT2/Runesmith 1/MT8/Legacy Champion 6. You'd lose three levels of casting on each side, and end up with 17th level casting on either side, netting you double 9s. Naturally, going Sorcerer instead of Wizard and being a kobold makes it even easier, but you can't be a Kobold Runesmith.