Every Camino is a good idea however do consider your reasons for doing this and think about your feelings upon completion-Was this a "real" Camiono? Were we "real" pilgrims? Did our efforts result in only "half" a Camino. You will be missing Puente La Reina, Eunate, Estella, Lograno, Ciiruena, Burgos, the church in Fromista, Carrion de los Condes, Leon, and the meseta which in April is green. You will be forced to complete around 25 kilometers a day-easyily done but not allowing much time for enjoying the view, visiting interesting churches, villages, and towns along the Camino, Springtime wonders of wildflowers and blooming of trees, introspection, or a day off to rest, you will lose your first companions from the initial stretch and then find yourself explaining your "skip" to new found friends after Astorga-pilgrims are a forgiving lot but you may find this unpleasant.
My recommendation? Do 15 days straight, begining or end doesn't matter. See if walking the Camino is something you really want to do. Stop see and enjoy everything natural, spiritual, and human along the way do not skip anything. Then if this is what you want come back and do the other bit. April is perfect, spring all along the way, the Basque country, Navarra, Rioja awakening from winter snow far above on the mountains, Galicia in spring is a riot of color, the countryside marvelous the cities and towns much less. Santiago calls but no need for immediate gratificagtion, Saint James will still be there next year, next decade, and next century.