Products kit feature

I need a products kit feature which has the following features:
1. A product kit must have it's own SKU
2. I can add (reference) products already in the store
3. I can setup a "kit" or "bundle" price (usually not the same as sum of single products)
3a. Maybe having something like: set a price OR (if no price) use the sum of qty x product price in group OR more scenarios
4. Show in the order checkout the bundle SKU with every products grouped and quantities.

Pretty the same as previous ubercart approach.

I'm going to give it a try, what I got so far:
1. I added a "Product Reference Kit" to fields
2. you create a new product type (e.g. Products kit) and add that field (image 1)
3. you add a new product of type "Products kit" and you will be able to reference products by quantity (image 2) and (image 3)
4. you create a new product node as usual and you will get the kit listed (image 4)

I still need to:
better naming conventions
show the products in the order.

Any suggestion will be appreciated, thanks.