I tuned my 2018 at 95,000 miles. Stage 2 Cobb w/ FMIC and intake. I put in fresh rebuilt shocks at 115,000 with Deavers in the back and Geisers up front. It's not easy to see how bad the ride quality has gotten until you put in a set of fresh shocks (deavers and geisers helped too).
The truck was always driven hard (even before the tune) but was very well maintained. It ran great at 123,000, right up to the point it was stolen/recovered. It's been difficult to walk away from that truck since it was always so strong and fun to drive. Point being, if you take care of your truck, then longevity shouldn't be a concern. I think you'll enjoy it for a long time. Good luck.