Ascent comp is not it on this map. A comp notorious for playing slow and probing for info into choke points on a map with rarely any choke points and C9's defense looks horrible they have a massive mid gap.
The Comp should be either Harbor Omen Breach/Skye Cypher Raze/Neon or Omen Breach Gekko/Skye Cypher Raze Neon.
Skye is a MUST if you run single init with the harbor omen and I think Breach Gekko/Kayo is a MUST for playing fast and taking fights on T and CT side. Omen should be non-negotiable aswell is the Raze/Neon.
As for Oping on this map it is very hard to punish opers on this map if you have a skilled Omen/Raze you should be fine.
Playing Fast on this map is a must you can change pace with some comps like this but it is nearly impossible to hold any of these sites even with the Sentinel on the site.
Discord