It's a controversial topic, some people believe in speed over strength, some people believe in pushing what you can get out of a single village to the very limit, others believe in specializing nukes and there are players who turn it into a science. At the end of the day, it will still take 2 nukes to clear a regular defense and many more if you are dealing with an active player's stacks.
In a few months you won't even remember the suggestions you get here because you will have formed your own preferences.