Please help? Yes, another shipping disaster :)

[shakir]

Hi guys.
Im trying to setup shipping to do the following.

For T-shirts:
*Have an option of $10 postage within Western Australia & $15 Postage Elsewhere
*An option to pick up from the venue (no postage) OR have it posted.

I have tried using weights but its messy and my maths was never great at school anyway.

Free postage for Paper event tickets.

Im surprised there still seems to be no way to just ASSIGN SHIPPING METHODS to product CATEGORIES! Or individual products!
This would be a life saver.

The final problem Im facing is a way to make variations within a product (T shirt sizes)  have their own quantity like 10 small 15 medium 12 large etc rather than only allowing 1 quantity for the parent product regardless of sizes available.

Sorry for the long and messy problem but if anyone can help it would be much appreciated!
Thanks