Aron had advantages that made all of the problems the early pioneers of runic computing encountered complete nonissues. He was the perfect, or perhaps worst, person to have ever gotten their hands on that technology; it only depended on whether you were friends or foes in his eyes.
For the mana requirements, he had an adapter that would convert electricity into mana, even if the ratio was steep. For material needs, he had atomic printers. And for the issues the original creators had run into regarding mass production of runic computers, he’d upgraded his atomic printers with the capability of printing runic constructs. All he would have to do is gather up the pre-printed materials and channel his mana into them for a while.
And even that would cease to be a problem as soon as he worked out a way of automating the process of imprinting intent into runic constructs that were created by his atomic printers.