help with impossible (mage lvl 10)

[morfor]

I went though KB:TL as a paladin on hard. Right now I am playing KB:AP on impossible as a mage.
Current stats:
Items: Blackthrone crown, symbol of valor (+100 leadership), and the +1 moral to humans painting.
1 attack 1 def 5 int 20 max rage 34 max mana.
I have higher magic and made 2 mistakes so far in terms of skills. I leveled chaos magic to 2 and picked up alchemy early.
1704 leadership
Dragon lv13

I desperately need a sacrifice scroll or trap or something but I can't find anything. I can buy a phantom image scroll if I need to though. Basically I rely on my dragon 100%. I leveled crushing blow so it does 800-900 dmg for 14 rage. I also have dragon dive which is quite nice for aoe dmg.

My army so far:
2 Royal thorns
5 Evil Beholders
inquisitors split into 2 groups
1 Cyclops.
Sometimes I merge the inquisitors groups and add some other random mob in there.

I almost cleared isle of scarlet wind and bolo completely. I can't kill hector though on scarlet isle. On rusty anchor though, my 1 cyclops isn't cutting it and I can't replenish my royal thorns/ beholders anymore. I need a new set-up.

I have 27 000gold right now.
Any advice?