A few other things you might want to consider, considering the voyaging you envision......
- It looks like you have two VHFs. I think that's essential, especially in traffic lanes and where subject to VTS.
- You might consider two radars. You would be seriously impaired if yours failed. I have seen a lot of boats with one open array as primary, and a dome as secondary.
- I would absolutely have a satellite compass as my primary GPS and heading sensor. Your Autopilot and radar tracking will work much better with one.
- I'd have a second mushroom GPS as back up, and a magnetic rate compass as backup. You have both of these devices, but they are your primaries.
- Your AIS will have a GPS mushroom dedicated to it. Some models might have this internal to the main device, but I think external is more common.
- A good external wifi device will utilize two external antennas. And a good LTE/4G device will require 4 external antennas. And all of them have spacing requirements. There are a few domes that include all the LTE antennas, but I think they are inferior to dedicated antennas. Check out Poynting in So Africa. They have really good products, and a lot of good technical info.
- I don't see a weather instrument. I think you will probably want one.
- I don't see any satellite dome, perhaps intentionally. An Iridium Go can cover a lot of needs, but if you are going to be off-grid for extended time, something more than texting and simple email might be needed. So you might want to allocate space for a possible future installation.