I wouldn't consider profile because it looks ghastly, and I could DIY my own welded steel rig if I wanted to do that much work which would look a million times better. Basically, I can't be bothered making a new rig, as my old one was just cobbled together out of stuff I had lying around, and if I was to do another one, I'd want to go all out to make a pro rig. I have an insane level of attention to detail in most of what I do, so I know that if I was to take on another DIY rig project, it'd take me ages and would end up being a ton of work. But that's my own problem, as I won't do things in halves.
As for the GTU, I'm not trying to dump on your purchase mate. What wheel and pedal set up do you use? I've heard they're fine for something like a Logi set up, but there must be hundreds of videos and forum discussions on the 'net showing and discussing the significant flex a GTU has when paired with Fanatec or higher end gear. I've got CSPs, and am buying a CSL-E, and I've seen that exact combo being used on a GTU, and the flex was crazy. I was pretty keen on getting a GTU before I saw that. My only concern with the F1GT is the pedal deck. When it's mounted in F1 mode, it's only secured at the base, with the far end of it unsupported from underneath. ISR's review said there was no perceivable flex in the pedal deck when in use, but the video did show a little flex when they used the CSPs on it. It's not a deal breaker though, because the deck is made from thicker steel than older NLR products, so should be easily reinforceable.