I will give you, IMHO, the zones that fit with each criteria.
- convenient for me to get to via public transit/cheap transportation or not a very expensive taxi ride from Ibis Paris Berthier Porte de Clichy with luggage (one suitcase + 1 carry on)
1. can be far, 4 not very convenient and 5 as it is outside Paris, your hotel can be far from the RER
- convenient via public transit/cheap transportation to CDG
2. Gare du Nord and the RER direct to CDG
3. Opera and Roissybus
6. Chatelet and the RER
7. RER if you are close to a RER B station
- safety
3 and 7 for sure.
2, 6 it depends on your exact location
Paris is a safe city but some people can feel unsafe in some areas, but not very touristic one)
- proximity to sights and public transit
All of them, but the best are 3,6 and 7.
Finally, I would advise you 3 or 7. As 7 is big, if you choose it, try to remain close to the river.
All the answers are only my opinion. If someone can add his/her point of view...
Hope my answer is clear enough!