I think you'd be surprised at the self-defense aspect of Capoeira - takedowns, head butts, knees. They are different 'games' and most people see only the 'friendly' games played outside the academy. And of course it depends on your mestre's teaching style etc.
At any rate, while both Capoeira styles are great, if you really want to work on coordination and especially acrobatic skills, opt to study the Regional style.
I don't know of a school in or near Riverside, California, but you should e-mail some in LA & perhaps they could educate you. They might hold classes that are not necessarily at the main academy although closer to where you are. (For example, our main academy is in Toronto, but also offers smaller classes in three surrounding suburbs.)
When you mention Capoeira vs. Aikido, I'd say try both & see which one you feel drawn too. Capoeira is unique - it's a study not only the physicality of the moves, but you're exposed to the culture (music - singing & instruments, history, philosophy & language). I respect all martial arts (I was also drawn to Muy Thai), although Capoeira was the one that continually captivated me for as long as I can remember. Only you can decide what is appropriate for you.