2 flaws and 2 traits allowed, all WoTC material with a couple exceptions most notably Dragon mag, BoVD, BoED, BoEF for obvious cheesons. I can take an LA +1 race but I would have to use a racial class and take my point of LA at second level (probably not a good option)
I think improved grapple is a no brainer since I don't want to provoke an aoo, and I am going to want IUS or the Unnapproachable East berserker lodge feat that substitutes for it if I go barbarian/avenger druid. I want the 10+ health from Shape Soulmeld: Rageclaws. Here is what I am thinking of for race
-Lesser Duergar for good con/saves and Enlarge person as SLA, disadvantage is less speed compared to human in light armor (though better with med/heavy) and I have to use a standard action to enlarge
-Lesser Aasimar or Buomman, possibly with Dragonborn template, +2 wis may be useful
-Azurin, extra feat and essentia point
-Synad, if it is a psychic warrior I could use the racial to quicken Expansion, or just get psionic tattoos of it and go to town
-Darfellan, more strength and extra iterative = extra grapple attempt
-Orc: lots of strength
-Warforged, natural attacks like Darfellan, lots of immunities but I would have to invest a feat or be low in armor
And for classes
-Barbarian (Most likely with Ferocity variant rage), gets speed, medium armor prof, and big strenth bonus from raging
-Totemist with Rageclaws and Girallon arms: Gets some armor proficiency, big health pool and grapple bonus
-Druid is a possibility, possibly with Avenger Variant, not sure exactly what advantages I could get from this
-Monk... gets IUS and Improved Grapple as bonus feats... but poor BAB, HP and AC
-Cleric- poor hitpoints but can get travel devotion or celerity domain for lots of speed, strength domain to enlarge self, and a choice between armor and knowledge devotion + skillpoints, but MAD
-Psychic Warrior or fighter for extra feat, PW can use expansion if I invest in 14+ wisdom