AutoCAD Civil 3D :: Creating Existing Profile From Survey Data

I am fairly new to the Civil side of AutoCAD, as I used to work primarily in Map.  I am working on a street rehab project in which I need to take survey points showing existing elevations (centerline, flowline, and top of curb) and show existing profiles in a profile view.  I have no problems setting up the profile view(s) or the centerline alignment, but I am having problems with creating the profiles themselves, and I have a two part question about them

Question 1: According to the user's guide, the correct way to set up an "existing" profile is by extracting it from a surface, but I don't have a surface to use.  In reading through the various profile types, the best way to set up what I want seems to be by using the profile layout tools, but the help says that a profile layout is supposed to be for a final "proposed" profile, not the existing.  Does this actually matter?  Will I be breaking Civil functionality by creating an existing profile using the profile layout tools?

Question 2: In reading through the profile layout tools, everything seems to be centered around PVI's.  Even using the "tangent tangent" method to add in points seems to only use the first and last point as controls, with everything in between treated as a PVI.  If you look at the documentation here, points one and four are treated as actual elevations, while curvature occurs at points 2 and 3.  In my case, since what I have is a series of actual points on a surface, each point should be an actual surface elevation with curvature occurring between points and not at them.  What method should I be using to input the points in the profile?