One of the big decisions I have made is to install the Lemo jacks for the BoseA20 headsets. The advantage of using the 6-pin “Lemo” jack instead of the standard 2-plug mic-phone jacks is that you can get power for your noise cancellation without having to rely on batteries. This may cause additional strain on your system but should not be enough to deter the change. What will be a significant change will be swapping out the connection on both of headsets as it costs an additional $300 per headset. In addition to this I have had to acquire a lot more miles connectors that came with my vans kits. Specifically I needed to look up the correct amperage for the flap motor which takes a lot of juice and you really don't want to lose that in flight (although not the end of the world I suppose). In addition I have several wire segments left to connect between the baggage area bulkhead and the panel as much of that does not connect all the way. Lastly one of the things I need to research on now are the transducers. I am not sure what type of connections to make and I am thinking of just making spade connectors for the three wires.