First your sorceress can't have seal of ghrond and crown of black iron: you can only have 1 talisman. What you could do is swap the dispel scroll on your other sorceress with the seal of ghrond.
About the banner og Nagarythe. It's really to expensive for a 2000pts battle. With a noble your COK will go stupid 1 out of 6 times so 1 time in a 6turn game.
how is your noble with shield of ghrond and sword of might a 182 points??
it should be 70+ 20+30+4+6= 130 points not 182
thats like 52 more points to play with
just thought i would point that out for ya
unless of course he has something else that you didnt post ::shrug::
I would actually give youe High sorc. the dark starcloak do to the fact that she's going to have 4 spell any ways, and she's going to need the dice to cast them. and with your second levle mage with 3 spells this gives her a better chance to get some thing usfull.
I always give my high sorceress tome of furion. Give darkstar cloak to your other sorceress so she can cast chillwind and use all other dice for your high sorceress which probably will have black horror and soulstealer with tome of furion
What ever you prefer, both of the taktics seem reasneble to me. But I use one sorc with the shadow lore, just to get thoes cool spels they'v got there.