172, no you can't. You need reported RVRs for the entire take off run if the RVRs are below 150m. Ergo, you must start your take off at a position which has a reported RVR.
Thus the implication is that you can't start your take off at the beginning of the runway if there is a displaced threshold because you're not meeting ALL of the requirements for a take off below 150m RVR. Furthermore, you still need the 90m visual segment which equates to 6 lights if you're starting at the correct point.