Harri,
I live in Los Angeles. I am assuming you will be visiting in the next few weeks? What day of the week will you be in town? The reason I ask is that during workdays, the freeways will be pretty busy. The San Diego (405) freeway is particularly impacted due to road construction north of the Santa Monica (10) freeway during rush hours (after 3 or 4 pm).
If you want to stop at Samy's, you might consider the main store on Fairfax, instead of the Culver City store. It is further off the freeway, but is the bigger store with lots more toys to play with. This also puts you closer to some of the Hollywood tourist locations.
http://www.samys.com/index/page/static/subpage/store_locationsNot sure why you are going to the Citadel Outlets location in the City of Commerce? It's the one part of your itinerary that I question. The reason is you will have to travel through downtown Los Angeles at some point. If there is a Lakers basketball game at Staples, freeway traffic wil be stop-and-go.
The other thing of which to be aware is that U.S. Daylight Savings Time ends next weekend. So you will be driving in the dark after about 6PM (1800 hours) local time.
Paul