Good prefab/assest to buy for FPS style shooter iOS?

Hello I have some game design experience from the 90' on unreal. I worked with Epic and RealCTF teams to make some of the first CTF modes. I new to unity and get the editor but I know I am not gonna learn all I need to know to get up and running quickly. I want to have the core game engine and input canned as much as possible so I can edit the gameplay,levels, and program the damage,weapons, etc.

I saw the FPS constructor as a good one plus the finger gestures, but are there others i am missing or better canned projects? I am not too worried about the models now will use generic to get game working.

But for iOS I am trying to keep, simple say a ship game. so have 3d model ship, one scene and just battle another ship (AI), you operate form FPS view behind turret with reticule, aim switch weapons and target other ship from the one HUD, you can from the HUD have status and damage and go to flyout screen or another screen to manage damage, or weapons, and you go to 3rd person view to move your ship (retreat,flank,) just by setting way points on screen or swiping finger in direction

Any good places or tools to buy or start with?