I'm not sure your wands are going to be very great in 1 player. Dual Duties are not as great if they defend 3 icons, when the strength boost is much higher.
I think there is an obvious thing missing from your set which is a bomb.
Honey Potion is not far away if you sell both the wands. Use a
Snowglobe Staff for now, but upgrade to
Black Frost Cannon asap, the breaking of Snowglobe staff will probably drive you insane!
Seeing as you have the defence, maybe you might want a
Sword of the dead. Normally you may go for Ethereal Sword but since this is one player and not every opponent has a Golden Compass, you may benefit from the extra icon Sword of the dead deals.
So, all in all...
Downsize! >>> Keep
Scuzzys Comb >>> Keep
Blue Scorchstone >>> Keep, upgrade to
Greater Healing Scroll when you have over 80 health.
Golden Compass >>> Keep
Frozen Wand of Crystals >>> Swap with a
Honey Potion
Cloudy Wand of Storms >>> Swap with a
Snowglobe Staff for now
Scarab Ring >>> This is a great weapon even at the 85 boosts, buy a
Sword Of the Dead and alternate depending on which icon the opponent favours!
Leaf Shield >>> I really don't know what to say, this will win half your battles in 1 player and even has uses in 2 player, if your opponent doesn't do earth and water you may want a
Prickly Potion in your sdb to swap in and out. I didn't think 6 icons regardless if they were reflected or not, would help, but it's good for the first round, or if you're trying to edge out a victory, you can use improved defend/defend and the attack will stay the same. However it costs a bit of cash, so this is the kind of 'luxury' item if you like.
The key to winning 1 player isn't necessarily brute strength, but strength in-depth.
Good luck to you in the battledome.