Ive been thinkin about getting leveling keys for my 03, not for more lift but for better ride. I already have the bars cranked up so it rides like a tank. So will it work or is it a waste?

Im also thinkin about gettin a 1" or 1.5" lift block for the rear, so i dont have to run so much air in the bags to make it set where it needs to be. Wheres a good place to get blocks? Should i just get like a 3"-4" blocks and replace the factory blocks?