I was wondering if having a Vessel (Homunculus, zombie, ect) would be possible at char creation. We have the prices, all you would need is an availability. any thoughts?

Yes I'd allow it. As they're just worked normal materials I'd set availablity at about 6-12 depending on material maybe make the best one 15 at most.(Sorry haven't really read up on them yet so can't say what the best one is)

i was thinking 4F per force level for the zombies and 4R per force level for the rest. Maybe 6R per force level for the plasteel one.

You could use the availability for the reagents.

I don't see why per force would have anything to do with it. A 30 kg plasteel homonculus is more forbidden than a 20 kg one? Why? For that matter, it's not obvious why some of this stuff should be restricted at all. It's not specifically magical until it's been prepared as a vessel.

And a zombie homunculus is just a dead body. Make your own or buy from Tamanous.

And cold medicine isn't dangerous until it's been made into speed, but they still check your ID when you buy it (or should by laws in most US States).

Not more forbdden just harder to get.

You have to admit that a dead body would be forbidden