As Roy Gandy of Rega once memorably pointed out, to get the VTA of the stylus to match that of the original cutting head used to create the record, you'd need the arm bearing somewhere down below the level of the disc surface. Oh, and the VTA of the cutter will have varied during the cutting process, sometimes by as much as 7 degrees, whereas moving the pivot end of the arm up or down by a centimetre or so - which is about all the adjustment some give you, will only give two or three degrees change in VTA.
So what you really need is an arm so far down on the stern planes that most cartridge bodies would be scraping the record, and with the arm itself going down through the platter to a bearing point well below the level of the disc - is it getting MC Escher enough for you yet? - and capable of moving its pivot point up and down by an inch or so across the duration of a record.
I wouldn't sweat it - getting the arm level is pretty much good enough.