No. Thats not at all what are you are doing. Thats gonna create a change in position of the stitches from right to left. You won't decrease at all, which is the point of the k4tog and the k4togtbl. The point of doing this is to lose 6 stitches in the process..that won't happen if you cable them. You're pretty much gonna have to find a way to do this. That is a pain to do though. I hate knitting things together tbl.
I think, and someone will need to correct me if I'm wrong, that you can slip the 4 stitches knitwise, then put them back on the left needle and then k4tog in place of the tbl.
Or, could you do two SSK instead of one k4togtbl.