Range 5 at Atterbury was in yards according to a borrowed range finder, a 4MOA front post, and google earth. I could be and am willing to be wrong, just saying.
Avoid Atterbury first time out, particularly if your father is a mature gentleman or has trouble getting around or if you don't get regular exercise or spend time afield with gear. too many sensory inputs to manage efficiently.
Bedford moves slow and is more geared towards a cookout than a focused marksmanship event. Ossian and Cloverdale are the most comfortable ranges to shoot at. MCFG feels compressed (because it is) but is centrally located. Nashville is deceptively nice.
ATM is the most entertaining SB, Yellowhousejake is the most experienced, Mudcat is the most grounded, SPQR is most arrogant and you will learn more if you catch him as an instructor instead of a SB, and Auntiebellum and DaveD are the calmest and most reassuring. Mudcat and Auntiebellum if you want to work on scope shooting. YHJ and SPQR if you want to work on irons. That makes up the majority of their veteran staff. They have several newer SBs who are very good as well (Brown, Spitfire51, etc.).
They pretty much all suck and you should probably go to Gunsite.
YHJ, SPQR, Mudcat and AB conduct most of their known distance shoots but they are probably all going to tell you that if you can't hold 4moa at 25yards with a sling for your only support you need to go to a 25yard shoot before going to Atterbury.
Avoid TBE, the guy is an @$$hat. Avoid SPQR, he ain't far behind.