Honestly, your build needs to change as a whole once you plan to remove Rogue C2. There really isn’t any purpose getting Scout anymore as it just gimps your build as a whole. Usually, the main idea of getting Cloak is just for that stealth Backstab or having better positioning before using Burrow.
Scout C1’s utility isn’t worth a rank slot if you’re sacrificing Earth Tower potential and this is important if you’re now wanting to focus on PVE. Don’t think you can get away sacrificing 1 rank when Koreans with their hardcore PVE builds can’t even clear Earth Tower until now.
If you already have Archer C3 on your build, then you must focus on having a Falconer on your overall build.
My final recommendation to save your build and be PVE viable is go for, Archer C3 > Ranger C1 > Rogue C1 > Falconer > Cannoneer/Musketeer.
Cannoneer and Musketeer is more of a personal preference at that point. Either you’d want more AOE from Cannoneer or more semi-AOE and single target burst with Musketeer.