DetroitTarpon

I'm new to this site and think I posted in wrong section. On my 3rd truck. Just bought a 15' GMC Sierra 1500 Crew Cab. Added Iron Cross Patroit Boards, mud flaps and XTang Folding Tonneau Cover. I've never nor do I know anything about lift suspension but sure would love to lift my truck. This is my 3rd truck and would love to get it up a bit higher. I also have Eagle LS2 P275/55R20 and don't want to change them if I don't have to. I want my truck to look level and tires aligned. I'm not looking to do any off-roading. It's simply for looks. The truck dealer near me recommended a 4.5" lift for Zone. I still need to be able to get into hospital/parking garages in downtown areas. So 4.5" is the max for me. Any and all advice is appreciated! If I can have the truck look the same but lifted up a bit would be great. I'm hoping my current tires and wheels would fine and not out of place? Thanks so much!