That drive to Marietta is Brutal in the afternoons/evenings on the surface streets and interstate highways. I don't know if you plan on public or private HS. Its takes almost takes 2 hours some days.
McDonough, GA in Henry county is almost exactly an hour drive to Macon. Living anywhere north of McDonough and it would add a some time to your commute south.
Here are the closest competitive cheerleading teams
ATA
A-Towne Allstars
852 Dailey Mill Road
McDonough, GA 30253
770) 898-9333
World Xtreme Gymnastics & Cheerleading - CHEERLEADING
World Xtreme Gymnastics & Cheer
338 McDonough Parkway
McDonough, GA 30253
(770) 957-5970
Storm Elite Cheerleading
]Storm Elite Cheerleading
9120 Wheat Street
Covington, GA 30014
(678) 625-0855
35 to 45 minutes drive from McDonough
Union Grove High School and Ola High School are top 5 in the state for competitive cheerleading teams.
Both are some of best schools in the state.
Only 45 minutes drive to Atlanta if you want to do some fun stuff. Henry county has lots of parks, it has a half rural/half suburban feel. Plenty of shopping, restaurants.