eCommerce Plugins

Hey all, I’m looking into some eCommerce plugins for a client of mine and I need help figuring out which one to go with. My problem is that customer is a custom whip maker and has to have multiple options available for each product and needs cost to go up depending on each option picked. For example, for one custom whip these are the following custom options needed:

1. Length Options ($10 for each additional foot)
2. Color Options (Need to be able to select 1-2 color options)
3. If they select two colors the price goes up.
4. Whip Handle Options
5. Price increase if they order a set (2 identical whips)

I looked into Cart66, since they have Cart66 Lite, but they only have 3 options available and they aren’t the kind I need. I then read that Cart66 works with Gravity Forms, but I can’t see how it does and if it’ll work for what my customer needs.

So, does anyone have any suggestions? Thanks!