Hello. Hoping for some info. I have 4" PVC protruding through concrete slab on grade. I am going to install the toilet flange and set a toilet. A couple of conditions exist and I thought I would check on my steps for the job. First, the construction on this house has me strapped for cash but I have to get through the final inspections. What that info means is that I won't be putting in any finished flooring for a while. The concrete was poured very poorly and there are extreme variations in the elevations in short distances. My thought is to level the footprint of the toilet while raising the base at least a 1/4" to compensate for future tile flooring. Then to cut the 4" pvc and install the flange on top of the new base. Sound like a good plan? picture follows. Thanks for your help!