touring in a 150
possible, yes. I fly a 150 horse Cub 22 kilos of baggage, full fuel, (135L) two up, within all limits. Much better, but not quick, with an 80kt cruise you get to see the scenery. Navaids magnetic compass, map and watch. Oh, and 300m strips are adequate.
Get a slow aeroplane that is a reasonable weight lifter and enjoy touring. Don't get one that is underpowered. Decent aeroplane that the 150 is, it isn't the world's best tourer. You might think about an LAA (ex PFA) type. Where do you fly? Can you hire a few different types to try?