If you're willing to fool around with sizes a bit, you could make a Huge statue of yourself, then cast Shrink Item on it and have the Wizard Permenancy that. You do need to be the caster for Shrink Item, but that will give you the stats of a huge object (far more hitpoints, much better strength, poor dexerity), and then at will you can shrink down to tiny, which is handy and gets around the usual "can't fit" issues of being huge. So, that's an option to consider at least.
Having the Wizard cast Hardness on you will help defensively, though it won't help with physical stats. Also, getting a Psion to cast Matter Manipulation is great.
Other than that, just wear gear on the statue that boosts your stats. It's still your body, so this should work fine.
JaronK