Yuman: Welcome to the ORG! We love to have more Bay Area MDXs!!!
Installing the BSMs is a slam dunk. You could do it yourself in 20 minutes, start to finish. Maybe 10. You don't need any tools, just some masking tape to hold the templates in place. Use the Search feature here on the site for 'body side moldings' and you'll find lots of discussions and pictures of the installation process.
As to the 'base carrier' you mention, I assume that you mean that you have a 'base' MDX (aka Premium) and you want to install the two-bar roof rack. That install is a bit more complicated, but still in the easy category. Heck, I'll do it for you
for free, just for the fun of it! (Of course, I'd be happy to accept a bottle or two of wine, not that my cellar could hold much more...)
So if the 'pretty much everywhere' in the Bay Area that you say you're willing to travel includes crossing the Golden Gate and cruising up to lush, cosmopolitan Petaluma

, come on up!
--Marne