Yep I need some advice (again), During the weekend I was cleaning out my modeling corner (the wife made me do it, forgive me

There are Esci Kits still in their original plastic wrapping:
Demag D7 (nr 5007)
SD.KFZ 10 + M18 Howitzer (nr 5008)
SD.KFZ 10/4 (5018)
I remembered that I bought them in a lot of a widow who was selling everything she had from her late husband.
I am not in to German armor (yet) but for ± 5 Dollars (still have the ticket she gave me) I could net leave them.
Well, I presume that these kits are obsolete by today's standards and therefore I was wondering if I could some aftermarket sets on these.
I knew the Eduard has a photo etch set for the Italeri Demag D7, but can I use it for these kit also?
Or are they so bad I only can use them a practice models?
#:-)