I've been steadily making progress, just haven't got around to updating this thread...
Bootlid is all done, went really well first time around and didn't have to go back making any minor corrections. The underside only needed treatment of surface rust at the hinges, tiny bit of filling around where I welded up the spoiler holes and a quick sand.
Discovered I really should have just replaced the rear panel as a whole... wonky as anything and I have had a lot of trouble getting the lip where I welded the new section in right.
There was no way I could pull the right hand side straight so I ended up bending the left hand side in the corresponding amount then correcting all the other slightly more minor bends with filler. Somehow completely forgot to take any in progress shots... it took awhile but its finally right.
I was cleaning up my repairs from the inside and found there was significant rust between the overlapping pieces at this joint so I cut it out and butt welded in a section to make it one nice continuous piece. All ground down and filled now, still need to finish sanding down and get it into shape though.
Filled in the spot welds around the boot lid seal area.
Decided I didn't like the ugly joint at the corner of the boot lid so I filled it in after some minor corrections with a hammer. Probably shouldn't be any significant flex in this location but just to be cautious I didn't fill the seam at the base of the 90 degree bend with filler, it will get seam sealer.
Bit of a problem when I went to do the same thing on the other corner.... yep 5mm thick of body filler hiding a bit of rust and a lazy repair job in the past.
Bit of rust in the overlapping seam so I trimmed it back like so
Then butt welded the joint good and proper. Turned out really well and will only require minor filling. Of course the heat from this buggered the filling I had previously done on the outside of this corner
Also found another rusty seam which I cut out and patched
Left hand door completely stripped including sound deadening (1 more door to do and I can weigh the box of everything I have removed)
Bit of surface rust in the door but nothing of any significance. Wire brushed it off good then painted it with rust converter/primer.
There were a number of cracks in the door which have since been welded up
Top of door skin was completely loose and had to be welded back on
Door sanded back, trim holes welded and part way through filling. You can see my filling at the very bottom of the door and along the trim holes. All the rest of the filler and high build primer was existing. Generally speaking the work that has been done is pretty good though so I am just doing minor corrections to make it perfect.