SP: I was at Markam two months ago, trust me, there is a reason you get extra points for going there to race.
I would not. But I'm fat,old and slow. You'll be there, so I will advise what to expect.
Narrow trails, many,many short stepup type hills and a few drop offs or 2 feet while going down, rocks, more rocks, narrow trails with deep grass on each side which hide more rocks,narrow trails, more rocks, some cool and fun man made ( not very high) board walks, wall rides etc.
Think John Brown trail at Santos, only narrow skinny trails and a lot more rocks.
I think when the city decided to develope the park, they finished up by saying "ok what do we do with the dump out back? And someone said, I know lets give it to the Mountain bikers, they will make trails out there.
Having said that, it is very different and fun to ride, but to race, it's gonna be carnage, locals will kill it, out of towners will return home with thanks for our trails.
I suspect that the race will sometimes come out of those tight trails and run around some of the lakes to give opportunities to rest or pass, I would hope so anyway.
Did I mention rocks?
PS. Best way to get up the step ups ( over large and small rocks) is ATTACK! Speed is what you need.