My system sounds very similar to yours. I too started with just an axle back with no mufflers, couldn't stand the drone. Ended up replacing the front resonator with a Flowmaster Super 44, and dual Magnaflows at the back. MUCH happier with the results.
2017 Ruby Red, Flowmaster Super 44 resonator, axle-back with dual round Magnaflows, cross-drilled rotors, Unleashed Tuning 93 octane flash, Ultimate Performance FMIC, graphics kit, 20x8.5s with 255/35s, Steeda front STB / rear sway bar, GFB DV+, "chair foot" VTA mod, caliper covers / (traded in on a 2018 F150 XLT FX4 2.7 Ecoboost)