I don't really think dwarf puffers are good tank mates for any fish.
Is there a particular reason you want to do a fish-in cycle? It doesn't really speed up the process, and any fish in the tank while it's cycling will be miserable. Adding ammonia to your water achieves the same purpose as having fish in the tank, and doesn't cause potential harm to anything.
If you're really in a hurry, and know someone with a healthy, established tank, you could get some of their used filter media and drop in your filter for a few days. This will speed up the cycle process greatly (opinions vary on cycling this way), but you still need to do water tests before adding fish, and there's always the risk of parasites or other nasties being introduced into your tank from someone else's media.