Don't worry about the kids expressing 'individualism' if in a uniform.
You'd be amazed at the wide array of modifications you can carry out to ANY uniform to make it it 'yours'.
I remember from my own school days it was vogue to tie the wrong way around and tuck the loose end away. This made a very thin tie, the smaller the knot the better.
An extension of this was making the actual tie as short as possible too, ether end.
There we have 4 variations (not counting tie lengths in between) just on the tie!
Shoes and Socks were the other 'variable', as were trousers (turn ups or not?)
Nothing wrong with enforcing the discipline of maintaining ones clothing. I would even be so bold as to suggest parents get the little darlings to iron their own uniforms.
Work out how much it may cost over a year, and if they don't trash their uniform give them the surplus cash. A good life lesson if ever there was one... look after your kit.
Include the cost of stationary in it too.