First of all welcome, and secondly good to see another X1 on the forum. I am not however sure its a Pro? (As a rule of thumb Pro Versions were Blue Frame with Grey Rear End, RS Versions Red Frame with White Rear End, even though all the PRO and RS bit denoted was the groupset!!, Orange have always been a bit unconventional with these bikes lol) I've owned pretty much all X1's from across the range and will put some links up below for you to peruse. Can't help you with the Shock side of things, I tend to run OG Strata on the rear and PACE on the front or Rock Shox. Give it some love and your X1 will provide many years of URT fun.
viewtopic.php?f=6&t=243726
viewtopic.php?f=6&t=254207
viewtopic.php?f=6&t=275050
Looking forward to seeing updates.
Jussa