That's a 5.2kg spring. It might work well for you. I've been using an old Beta chart for spring selection on my pre-'18 Gassers (an '05 and an '11) and it seems spot on IMO/IME. According to that chart a 5.2 shows it should be good for 185-199lb w/gear riders.
Set your SAG, check your static and free SAG numbers, and then you'll know if it's right for you. Oh, if it is, read this thread...
http://www.gasgasrider.org/forum/showthread.php?t=1628