Is this close enough to what you are after?

If so, what I did is I took one of your side guide curves and trimmed it to the top profile section to break that into two curves. If you turn on POINTS you will be able to see the line that I broke / trimmed or you can click on the segment and you will be able to see which line I trimmed.

Anyhow, after I trimmed that line I then lofted the lower three profiles together. For the loft I also selected to NOT cap it so it is just a surface body.

Then I used a revolve for the top portion of the line that I trimmed into two pieces. When you select REVOLVE make sure that you are doing a RAIL REVOLVE. Pick the shorter, upper trimmed line as the PROFILE CURVE and the top edge of the main loft that you did before to form the initial surface.

Then, for the AXIS start I selected the very top point (I worked with SHOW POINTS on but the snap tool probably works just as well but I wanted to see what I was doing.

Once you pick the first point then move the mouse up in the Z direction and if you have STRAIGHT SNAP enabled when you get close to straight up in the Z axis it will snap to straight up or straight down depending on the direction you go. When that happens click the mouse again to end the axis of revolution selection. the revolve will happen almost instantly.

Then I selected both surfaces and clicked JOIN to make it one object a 'Joined surface'.

I hope that made some sense and I hope it is what you are after.