As a multi class I will use the lower tier summons more - Skeletons, Wurms, Ogres, etc. Having 6 Skeletons (instead of 3) or 4 Ogres (instead of 2) feels just more powerful ... remember: the summons only have reduced health and duration on a Beckoner but hit as hard as their larger base form.
I haven't decided yet, which Paladin sub class I will choose. The armor rating from Goldpact Knight is useful, but only benefits my character, who should already be very tanky. The healing from Kind Wayfarer for Flames of Devotion is nice, but for full benefit it would be better to dual wield instead of using a shield. Shieldbearer gives +1 engagement, but the upgrade for Lay on Hands seems to be too situational. Bleakwalker and Darcozzi don't synergize very well. At the moment I think I will go with Kind Wayfarer.
Because Pallegina has low Might, I will put Exalted Endurance and Ancient Memory on the main character (with high Might). Pallegina (also as Herald) then provides Exalted Focus and the new chant that increases healing by 100%. Haven't decided on the other party members yet.
Well, when you play in a party, it's surely not so important. I thought you want play solo with this multiclass.