Print 3D Shapes

I would like to have a 3D printing of three (3) spheres that intersect equally, the segment where all three (3) spheres intersect together [which is called the "Spherical Lens"], as well as a top/bottom of a contoured case to hold the three (3) spheres and one (1) Spherical Lens ["SL"]. There is a total of six (6) pieces anticipated to be printed [3 spheres + 1 SL + 1 Case Top + 1 Case Bottom = 6 pieces]. The Case Top and Case Bottom are exact duplicates of one another. The 3D drawings are attached in both .stl and .step format, as is a .pdf file showing the individual pieces. Please note that I would like to have the drawings modified to accommodate the following: (i) all outside edges of the top/bottom of the case slightly radiused; (ii) the addition of words to each of the spheres so that the words are visible when the spheres are installed in the case; (iii) the printing of the spheres in separate colors [metallic red, metallic blue and metallic gray); (iv) the printing of the SL in metallic gold. Preferred material is solid ABS. Freight must be included in your bid--to be shipped to USA zip code 27517.