1. Invocations. I see nothing wrong with the list, nice changes. To replace Call Archons, perhaps you might consider an invocation that calls deathless like the animate dead ability. Just say they are spirits from Celestia, don't require bodies, and it remains pretty much the same, excpet change the material component to something like an opal.
2. DR/Silver is good.
3. Archon's body, as long as it is fleshed out proper is great. I see you've put the work in, it looks fine.
4. Skill points should still be 2+ int, not too much has changed.