I'm so excited to see someone attempting this! The only transit serving SJC is VTA route 60, so if you want to take transit to work, check the schedule and route info because that bus may not go directly to your office and additional transfer may be required. Hotels can be expensive. So if your workplace has shower, you might as well consider renting a car for the 2-day period, take shower in the office, and sleep overnight in the rental car in the office parking lot, ***only if your body can handle it***.