"Is it best to only hatch 7k eggs?"

#PokemonGO: Im a casual player, I get an incubator every 3 days from coins. I recently showed interest in getting a Riolu from 7k eggs. This made me look at egg hatch lists. I really don't think 2k and 5k eggs have much to offer compared to 7k, and 10k is obviously better, but you have to deal with the 2 and 5k egg clutter to try to spin a 10k egg from a stop.Do you guys think its better to just always be doing 7k eggs, not just for Riolu, but for getting a relevant pokemon from each egg hatch. Iv looked at it and the 2k and 5k options just dont seem to be worth it, even to try to get the 10k eggs via /r/pokemongo https://ift.tt/2UHELnE