Goblin builder.
He needs a full action to cast a corporeal conjuration, his next action is a move action to position him for the next conjuration, while you are saving the mana for that conjuration (or for putting a bigger creature out).
He can take care of the actions needed to get the kinships in place while your straywood does other things.
Preferably non-mana-intensive things.
Go forward early so your builder can stay at the back and plant Mana Flowers, Kinships, an Enchanter's Wardstone, Meridia's Blessing while your Straywood hits stuff, enchants or heals now and then, quickcasts Lv1 animals and Fullcasts a bigger threat (which has enough life to guard) now and then. Put three Ring of Beasts in your book to bait dissolves/crumbles, they are so cheap you'll get your mana out of it.
The Goblin Builder is great and does not get enough love in my opinion. (He's good with a siren too => Shallow seas, coral walls, bed of urchins, mana flowers, the wreck,...)