I am not a complete stranger to the Panzer4 and I generally go for the latest Taigen Metal Hull the Heng Long Body and the Latest Taigen Turret as to control boards thats a personal thing upon which I will make no further comment,
The Taigen metal hull is B awful
and needs a lot of work with a dremel, I flush cut the rear track adjusters and with a long drill bit went right through then fitted an aftermarket adjuster from
www.rctanks.de and used a locknut to hold it in place a shaped screw behind it gives the look of authenticity, I dremmeled the 4th roller off and drilled 2.5mm below and fitted a new set of rollers, The front I left there is far too much downside tinkering with it.
The Heng Long body has the advantage of having an almost clear deck so that mounting tools and other impedimenta can be done as it should be done and just plain looks right.
Taigens turret is the standard that even Tamiya should work to achieve although it has its failings,
The Cupola looks great with its faux welding but unlike the old one it is not removable so you are pretty much stuck with an Ausf G because the Ausf H/J have a different 1 piece hatch cupola but the bore sight which nobody else includes and the ease with which either Taigens or Tamiyas Turret armour fits is a delight,
With Tamiyas Schurtzen I went by Tamiyas own instructions which is to be found on the Forum as a Download,
All in all you are doing a prize winning job Herman a pleasure to follow your work.
I'd say you're approaching that, especially with those bits of brazing/soldering. 
We don't want a trail of blood everywhere, now do we.. 
