Ehlum's Beast - Evolution at Level 6

The Shining Scorpion Adventuring Crew reached level 6 in our Pathfinder game after defeating a room full of orc and dwarf skeletons last night. My summoner, Ehlum, doesn't get a lot for himself at this level, but his eidolon gets a nice boost. Also, the party came across a +1 flaming warhammer that no one can really use. Those with the proficiency already have weapons they like. So, with 9 evolution points I'm likely going to present the quadruped like this at next Wednesday's game:

Evolutions	pts
Limbs, legs (2)	-
Bite (1d8)	-
Claws (1d4 x 2)	1
Limbs, arms	2
Improved Damage (Bite)	1
Fly	2
Improved Natural Armor (+2 AC) x2	2
Pounce (full attack after charge)	1

New feat: Martial Weapon Proficiency (warhammer)

So now, his attacks will look like this:

Warhammer	+9	1d8+6, + 1d6 fire
Bite	+3	1d8+3
2 Claws	+3	1d4+3

That +6 damage added to the warhammer is dependent on the eidolon swinging with both hands. Otherwise it's +4. 

Here's a quick sketch I did of Ehlum's beast with these evolutions:

click picture to enlarge

I would like to add reach to his warhammer swing, so I may drop something like improved damage on the bite. I'm also considering giving him the mount evolution and using the enlarge person spell on the beast often.