make your plan simple and prepare yourself for it not be used because it all depends on baby.. I'm packing my bag at 37 weeks just cause that's considered full term and labor can begin any time at that point...
Once I buy myself a duffle bag and diaper bag this weekend I'll be starting to pack our bags for the hospital. I say go for it if you want to start now. That way you can have everything ready or add more stuff to it later on if you want