Help with lift and wheel sizing.. a little lost.

Hey guys so I'm pretty new on here but I've owned my tacoma for a while. its a 2012 dbl cab completely stock. and its time to do some upgrades. Im not the most knowledgeable with cars, so some help is needed. Ive been doing tons of research on wheel specs, back spacing, offset, the whole nine yards. But my mind is still blown. Heres the plan:
I want 3" up front and AAL in the rear.
Bilstein 5100s in all four corners. Ive read mixed reviews on what coil overs to go with. Im stuck between the eibach 620s or the OME coils. Which OME coil will provide me the 3" of lift? And why should i get one of the coils over the other? 3 inches up front is my goal.

Next is my wheels and tires. i want to have 275,70,16s.
I want the pro comp 31 series or 32 series in size 16x8 in a 6x5.5 lug:
http://www.procompusa.com/wheels-product-details.aspx?pt=101508&lc=PXA&pqq=2336-1558&pqa=13668-8275
will these fit okay? is the back spacing alright, what about the offset? I've hear some 16" wheels not fitting because they hit the caliper. are these okay for the truck with no modifications? are all 16" pro comp wheels going to fit fine (assuming the right lug pattern)
also i want 275,70,16s on them. Im confused at how a 10"wide tire will fit a 8" wide rim... that doesn't seem right to me, can someone explain that for me.

Thanks guys, appreciate the help. and sorry for the new guy, don't know anything about anything post.

 

OME 887 coils up front. I see you're looking to go 3" up front..you will need upper control arms with a lift approaching and above 2.5".

From my experience, an AAL will not last long, the ride will become rough and your rear end will sag..you are MUCH better off getting a replacement leaf pack for the rear..TRUST ME.

 

will the 887s give me the 3" with out a spacer? what setting should i make them on the 5100s? gotcha on the UCAs, but do i HAVE to get them? or will they just be easier to get alignment?
what do you think about the Headstrong 3 leaf AAL? i don't have the money to spend on dakars.

 

and why OME over the eibach coils? thanks for the replay

 

I normally don't recommended mixing the coils..but people on here love the results and you seem set on 5100s (the less expensive shock over OME)

 

okay, should i just stick with the eibach coils that come with the bilsteins?
also what about my wheel questions?