Hey, welcome to the forum, Axus! Cool name! Dark Arbiter in BR as your first saber sounds pretty Sithy to me. I have the regular Arbiter and love it! I also have a Dark Arbiter on the way myself because I love my regular Arbiter so much, that I think it needs a brother.
A couple ideas to consider: if you aren't getting Emerald or Diamond, I highly recommend you spend the extra $15 for quick disconnects, and be sure to have them include wiring for Flash on Clash, even if you aren't getting it now, because then you can buy an MLS module with Flash on Clash later and easily swap it out. If you don't get Flash on Clash, I recommend the Tri Cree version of Blazing Red so you get a fuller, brighter red blade.
When you order you may still be able to get the four piece version (MHS compatible emitter, neck, hilt and pommel) if you ask for it in order comments and immediately email
info@ultrasabers.com with your order #. That is, if you'd rather have a 4 piece vs. 3 piece.
I look forward to seeing your posts around the forum as well as this cool siggy you speak of.
Welcome Dark Side point to you!