If I had the money, I would buy 3 different sabers. The first of which is the Ultrasabers Apprentice, my "padawan blade" so to speak. It is a standard yellow lightsaber.
My second is the Saberforge Vanquish. I would practice Form II with this one. I don't know if I can mod it to make it sound like the crystal's cracked like Kylo Ren's blade, but if there is a soundchip for that, I will find and use it for this saber, that way it would look and sound like crackling lightning.
The third blade is the Ultrasabers Phantasm. It would have 2 white blades. I'm not exactly sure how I would use this one chronological-wise, but I do know I would have a hell of a time practicing Form IV with it.