Re: Mixing Aikido with other martial arts
With 3 to 4 months of boxing, kyokushin karate, judo, mauy thai, bjj, sambo, etc. You will be good enough to handle most untrained people in the ring. Which I personally beleive transfers well to self defense on the street. Of course the blending is all up to you and how you look at and train your aikido.
Personally, I was a judo/bjj/aikido guy. Now I'm mainly focued on bjj/mauy thai.