A good recommended progression order would be:
1. Halfus (arguably easier than Nefarian normal)
2. Chimaeron (may want to skip him till later, he has some RNG elements)
3. Atramedes
4. Maloriak
5. Conclave of Wind
6. Omnotron
7. Magmaw
8. Twilight Ascendant Council
9. Al'Akir (is very doable, but p1 has quite some RNG and a lot of coordination requirements. P2 and P3 are fairly simple and straightforward)
10. Nefarian?
