Is it possible to have this shipping set up?

[kailey47]

I am using version 1.3.8a

OK i have read thread after thread about shipping modules and configuring them etc I have found some things that I think i can use but I am new to all of this and not sure if what I need is even possible.

this is what I need

Category 1 & 2
Store pickup or Australia Wide $5 Flat Fee

Category 3,
Virtual Product no shipping

Category 4, 5 & 6
Australia Wide Flat Fee $10 (NO Store Pickup)

Category 7, 8 & 9
Store Pickup or
1 to 5 items = $10
6 to 10 items = $15
11 to 15 items = $20
16 to 20 items = $25
21 + items = $30

Category 10
Store pickup or Australia Wide $10 per item

Category 11
Australia Wide $10 Flat Fee

Category
Store Pickup only (this will change in the future, similar to Category 7,8 & 9)

If the shopper chooses items from different shipping groups I need to charge them for each group, so if the bought an item from Cat 1, Cat 5 & Cat 10, the postage would be $25...

OK, so I know this is quite complicated, but is it possible or is there and add on/module that can do this for me?

Otherwise my only other option seems to be using the product attributes for the flat rates and shipping mod for per items shipping.

Thanks
Ree