Not really because spreading ou evs like that accomplishes nothing. Also, since dragalge already has adaptability, using venoshock is almost pointless because of spinners like forretress.
I'd suggest a set more along the lines of this:
[email protected] Draco Plate
EVs: 252 HP, 252 SpA
- Draco Meteor
Because of adaptability, coverage is almost pointless because draco meteor outdamages any type of coverage. Draco Plate allows you to bluff choice specs/scarf, which would allow you to get an extra hit or a layer of toxic spikes. Also, it gives a slight boost to dtail and draco. Speed evs are not necessary because dragalge is not very fast.
Essentially, this is a good offensive toxic spiker.
Hope I helped!