These are problematic, in that they are very min-maxed. Most LA 0 races have one, maybe two pairs of ability adjustments. If we count the +4 as two, these have 3, which is a lot.
While they have drawbacks, these are essentially halflings, but more so. They make absolutely awesome rogues, and are decent at a few other roles, such as wizards, thanks to the intelligence bonus, but they suffer in every other role.
Which means that as long as they play to their strength, they will simply be better at it than any LA +0 race, and probably better than quite a few LA +1 ones. Low strength is a drawback, sure, but not a very big one.