Your 50mm becomes a 75mm equivalent, which is passable for portraiture. 85mm-200mm (with a f/1.8-2.8 aperture) is generally considered best for portraiture, which on your body, would be about 60mm-135mm. (Pros also like to use 300mm-600mm lenses for portraiture, but this usually requires an assistant and radios to communicate with the model.) The smaller sensor also increases depth of field, so you may want to budget for an 85mm or 100mm f/1.8 or f/2.0 lens in the future (80-200mm f/2.8 zoom would be ideal, but is very pricey). The longer focal length will help reduce depth of field to help you blur the background in portraits.
35mm would become 52mm, which is considered a "normal" lens - decent for all-around snapshots but not really excelling at anything. If you want to do landscapes and scenics while traveling, I'd go for a wider lens, possibly a zoom. 20-28mm would be a good range to target, maybe even going as low as 18mm (if you go too wide, the bulk of the photo ends up being filled by sky and ground, so isn't as interesting).
Is the 50mm your only lens? Most people buy the body with a kit zoom lens. A couple months of using the zoom will give you a good sense of what focal lengths you prefer and what your next lens purchase should probably be. If you're using a photo management app which reads the EXIF data in photos, many of them let you generate a histogram of the focal lengths of all your photos shot with a particular zoom, and you can see where your preference is.