At the moment, I'm creating my game using Unity Indy. Once I think I have enough work to start testing on an iPhone, I'll be switching over to Unity iPhone. But in the mean time, I have some questions and would appreciate it if you guys could help me out:

1:First of all, I read that I should keep my draw calls at around 30, does that sound correct?

2:Also, I want to have 15 enemies on screen, same model, same texture, same material. Will that still result in 15 different draw calls?

3:Do particles count as many draw calls or just one(or a few?)

4: If I have a very low usage of textures(almost none), no lighting at all, and VERY low poly models. Could I get away with more 40-50 draw calls?

In order for my game to play like I envision it, I will be needing to have 20-30 enemies on screen at once at times(definately not always, the usual count will be 10-15).

The way I see it now I'll have these draw calls:

1 draw call for my main player 5 reserved for my simple terrain mesh(just in case I use more than one texture) 15 draw calls for every enemy. ?? draw calls for particle effects. 5 reserved for UI. 5 for rockets/power ups. 5 for loose objects that the player will interact with somehow.

This is a total of 36..will I be able to run it at 30fps?

Thanks in advance, and sorry if this question has been aswered too many times before.