It is quite overwhelming to think of making a whole wardrobe all at once, not to mention three. We all three of us have good clothing that was store-bought, and even though I would like to open up our closet and see only handmade garments there, I feel it is also important to respect the time, materials, people, energy, and cost that went into producing those store-bought items. Rather than chucking it all, I would rather let it go through its normal cycle of wear to reach the point of needing to be recycled and replaced. (Offhand, I can think of a few sweaters of mine that I can refashion to make little sweaters for little L.)
One thing, or in this case, garment at a time. Baby steps.