I-140

Hi, I recently joined full-time with fortune 500 payroll company headquarter in New York. My H1b is approved and now i'm filing for my GC starting with PERM application. I am supposed to work at my office location in Virginia as per my H1b petition, but i work mostly from home in different state(TX). Now legally i'm not supposed to work more than one day per week as per my company policy. But due to nature of work and since i'm on good terms with my manager, He doesn't care where i work from. 

So when filing the PERM i initially given work location Virginia, and my home address in TX(Own house). But later i realized this may be an issue since work and home location are totally in different states. And i can't add my home address as secondary work location as per company Immigration team since they assume i only work from home on sporadic basis. But i work from home most of the time and travel to work once in 3 months.

So since i can't use home address as secondary work location, i need to use local Virginia address(Friends home) for home address in PERM application. But my question is if there is a SITE VISIT from USCIS and i'm working from home that day what kind of trouble will be in? What are my options then?

I was told the USCIS doesn't give prior notice all the time for site visits. If there's a notice then i will make sure to be in office. Please let me know for any suggestions on how i can proceed further and what happens if i miss any SITE visit verification.