Quick question does the waste arm from the sink to the Sanitary T have to be a straight shot or can I after it leaves the trap head back towards the wall and curve over towards the T, not a sharp 90 but something gradual so I can get that waste pipe to the back wall.
Yes, but you were planning to bring the drain line out of the the stud line, weren't you?
But you can curve, but the curve counts toward the total length.
So that pitch would be very gradual over the 3 foot run would it not? I assume its trial and error getting the proper pitch and not setting the trap Wier too high or too low as water wouldn't flow? Would setting the Sanitary T in position and then make the adjustments at the tail piece length be the way to go or mess with both until its right?
Normal pitch is 1/4 inch per ft or 2 degrees if you prefer.
Yes, you place the sanitary tee in the wall. If you are going to come out of the wall and curve, you would probably do that in regular glued pipe. Then at the end of the regular pipe, you would put a trap adapter. You need to get the slope on that pipe right, because it is glued in place. Then from the trap adapter, you can easily adjust the slope by changing the length of the tailpiece. The pieces have a range of adjustment that you can make without having to cut precisely. So you would cut to try to get the piece near midway in its adjustment range, and you can then go either way to adjust. You adjust the length of the trap arm (you will need an extension probably) to get to where the p-trap needs to go.
So is that area going to be expose, and that is why you would like to have the santee in the wall? If you bring the santee out, you will have more space for insulation.