So am also looking into this awesome looking frame, already have quote from LT.
I am curious about sizing, I also have the VB-R-168 road bike in size XL / 58 cm ish with a 42cm handlebar.
189 cm high and looking more for comfort that aero. Would 58cm also be the natural choice for the GR/GV201 frame?
Right now i have a 42 cm handlebar, but based on recommendations from this thread I think i will use the Lexon Unox handlebar that have 20 degrees flare, would it make sense to go with 40cm instead?

Now I just also need to find the right color/design that might be the most difficult thing

Im 189 and weight 86kg. I have 88cm innerseam. I got recomandatet 56cm from Alisa from LongTeng. Was this a bad recomadation?