That will work, but it's clunky and hard to use. It basically makes the iPod look like a 6 disc CD changer.
Outside of the non-OEM solutions like the m0bridge and such, the only other way is to retrofit full 6FL. It's a little more expensive to retrofit (you need to buy a MULF if you already don't have one and buy the retrofit kit which is only available in Europe).
There's multiple threads on retrofitting 6FL for your time consuming, reading pleasure.