Would an alarplasty deliver my desired results? Should I consider other options? (photos)

The term "alarplasty" usually means bringing the attachment of the nostril to the face either inward or outward (to correct flaring or a prior alarplasty). What you are desirous of is technically also an 'alarplasty", but doesn't involve moving the attachment inward or outward. It is a common procedure to correct a hanging alar rim and just involves internal skin excision and raising the rim. It is a relative "stand alone" procedure and is definitely capable of achieving the result you desire in the photo.

Because your photos do not show the full face in profile, it is not possible to analyze whether the primary problem is that the alar base is too low, or your nose is too short. If sthe latter, lengthening the nose would normalize the alar base position in relation to the rest of the tip. Otherwise, the alar base could be raised, with internal vs. external approach depending upon your skin and soft tissues. I suggest an in-person consultation with a board certified plastic surgeon who is experienced with rhinoplasty issues to determine the best approach.

Alarplasty will not help. The columellar show can be improved with a small cartilage graft. You will need a tip plasty and dorsal hump reduction to get the desired the results.
Regards
Dr. J