So your going to go from having a SEP-IR head on.
To then drop that to do visual work on the CPL course
Then do your MEP skills
Then without any training at all you going to do a CPL test which involves flying the twin on instruments, doing unusal attitudes, steep turns and stalling to a commercial standard.
Then after that to put yourt IR head back on and in 15 hours get back up to speed flying all the procedures. Then re-learn them all again but this time single engine.
Dream on.
You will get plenty of twin hours alright with the additional remedial training required.
I would go and have a chat with the poor sod your expecting to sign your 170A I wouldn't be suprised if they laugh at you.