Yes, 2G will qualify the WPS for production positions for Flat and Horz CJP and PJP Grooves and Fillets on Plate and F&H on CJP and PJP Grooves on Pipe and Fillets in F&H on diameter greater than 24".-see Table 4.1
"Prequalified" is a status for a procedure you can write as long as you meet all of the essential variables listed in Table 4.5 and can do so without having to qualify the WPS by testing.-see Paragraph 3.1
Unfortuanately your materials are Group 1(A36) to Table 4.9(A514) and are not prequalified.-see Paragraph 3.3
You will need to refer to Table 4.2 to see what testing is required for your WPS qualification.