2011 is when the Challenger became a frowny face, Ram-less, suspension changes and the 392 available. Also, power steering went electric so worries there.
Brakes like to go soft and would be a primary concern so better pads (Carbotech, some Hawk, Cobalt, PFC, some Raybestos, Ferodo, StopTech are some HPDE options), fluid (550+ from Motul, ATE, Wilwood, StopTech, Catrol off the top of my head), and maybe stainless steel braided lines (Goodridge, Russell, StopTech).
Reference the Frankencooler and Joelvan's radiator thread for insight on the cooling system of these modern Mopars and decide for yourself. Maybe only push it 80%.
Those items will protect you and your Mopar. Then there's tire selection for our heavy cars which have an XL load rating - but does that concern you? Limited/expensive options for a 20" wheel, many more for 18" (thanks to 200 treadwear tires for autox). The Nitto NT05 seems to be a popular choice for price, performance, longevity and availability.
I'd say those are the most relevant factors for HPDE before you dive into suspension upgrades.
My FURIOUS FUCHSIA 2010 Challenger R/T A5
FLOW LMI FIV w/ S&B, Belanger Tri-Y's, Zoomers, 392 front clip, SWM diffuser, Trinity
GO Wavetrac LSD, AMG diff cooler, Tranzfomer/NoESP
WHOA SRT8 Bilsteins, Mopar springs, Hotchkis sways, PowerGrid endlinks, REM bumpsteer, Whiteline bushings, Petty front brace, REM rear brace, REM trans brace, Mopar M6 mounts, Joelvan's P/S pulley, DBA rotors, Carbotech pads, Russell s/s lines
SHOW Billet Tech, 3G Customz, S&P, Hurst, WebElectric, RiderGraphix
TO INTSALL: Frankencoolers for P/S, oil and trans