He don't need an 8 pound Maul a lightweight chopper is fine, using a heavy Maul on small splits could be a bit dangerous for inexperienced folks.
Dan the rest is up to you, you got many things to choose from but just remember the tool alone wont do the job, you need to work on your skills a bit, the hatchet you got would work for me with a little effort however that would not be my first choice, the Maul that ButtBurner linked to, would tire me out after a half an hour.
Choice is yours and good luck