That might be a bit OP. Maybe 2nd truck built (but not placed) then it has the flexibility to have something for med+mech+spec ops. Keep the lmg34 behind schwere.
I think its fine after one truck is built. You can compare the stats of obers with other premium infantry like Penals, Pgrens or Falls.
Unit / MP Cost / Popcap / HP / Dmg10 / Dmg20 / Dmg 35
Obers 340 9 457 25,7 20,8 14,8
Penal 300 8 480 26,4 18,6 10,8
Falls 340 9 386 33,6 25,6 18
Pgren 340 8 400 47,2 28 4
And at the same time (around 2Cp) other doctrinal elite units can be called in like Shocks, Guards, Commandos, etc. If Obers are too good at that timing, there is still the opportunity to nerf their target size from 0,7 to something like 0,8 and move that 10% on vet4/5. At the moment it just feels like i have to go either Falls or Jli if i want to go for light vehicles like puma or stuka. This and a small Spio adjustment would solve a lot of problems okw has at the moment.
Edit: And then there is the opportunity to make the STG-Upgrade for Obers more unique and useful. Instead of requiring Schwerer/Panzer Auth. like the lmg upgrade, it can be unlocked on ~5 Cp. So a Okw player can go heavy on light vehicles and still have a decent lategame Infantry.