It's usually easier (and arguably better) to replace a panel at the same attachement points as the factory used, not only for looks, but for strength also. Nothing wrong with a partial quarter installation, but using the factory spot welds takes the heat away from the crown, or center of the panel, minimizing warpage and distortion that you'll have to recreate with filler. Either way it's a big job, and although it may cost more for complete panels, you'll save it in "time" investment, just like if you get partial "skins" for less money, you 'll spend more time installing them, finishing the welds, and prepping for paint with fillers, primers , etc... It's a hard ($$$)decision, but in my opinion, it's best to go with full panels, and save money somewhere else.
KT.