I rather strongly suggest that you don't want to get into active pickups at this stage in your guitar building career. It provides an extra degree of electrical complication that you could well do without. So in your place I would put those pickups back on the shelf, or even back into classifieds, and give us a full and complete list of all the other pickups you have lying about (photos too), and we can make suggestions of what would be a reasonable combination. While you are at it please can you also measure the length, width and depth of the pickup cavities (a photo of that would be good too).

Jim C