2) like 1) except also choose yes to "Does your PDF file contain multiple documents?" and then give page numbers for all the parts: abstract, specifications, claims and drawings. Is it okay to have multiple parts on the same page?
3) Split the pdf into separate pdfs - one for each part and upload them under the category "Application Part".
Thanks
Do either 2 or 3 for the reason Jim mentioned. You want the pieces properly categorized by the application parts they are. Like Robert, I've had no trouble with the multipart system (I do have a similar gripe about emergency downs). Note you can not get the 3rd, 4th boxes to open on the multipart system until you've filled in the info for the first 2 boxes (throws some people off & they think it's not working).
NOTE you need to make sure specification ends on a page, then claims start on a new page, and abstract starts on its own page. I.e., you can NOT have different types (spec-claim, or claim-abstract) on the same page. This is true whether filing EFS-Web or on paper.
Payment?
Application Data Sheet? (I don't think this is critical as long as your cover sheet lists each inventors' address. If it does not, you'll draw a Notice to File Missing Parts).
EDIT: If you've never used it before, note EFS-Web requires all fonts to be fully embedded in the document. How are you making your PDF file? If scanned image, it will be fine. If using the Cute-PDF the patent office offers for download it should also be fine since it automatically embeds (used to anyway, a few years ago when I used it). But if using Adobe, the default is unembedded fonts, so you'll need to go into the properties dialog box on Adobe and edit the default settings, telling it to embed all fonts.