I have a single member LLC in Oregon. I've been operating a coaching biz and reporting income on Sch C, using my SSN. I now want to have a second income stream, building websites. Can I still use the SMLLC, my SSN, and report on Sch C? Or since it's a different class of business, do I need to have a separate LLC? If a separate LLC, can I still file on my tax return, using another Sch C? Thanks.