Marry Aisha. She has a nobile and military background, making for immense social status opportunities. Being as qualified in the Ctarl-Ctarl empire as she is for her age is impressive and her aptitude will only increase as her pay increases, especially when she retires and gets that pension money. All of her connections won't mean much if her attitude is not kept in check (which is probably why most people consider JimXAisha as canon), but I can't imagine that being incredibly difficult. On the contrary, Aisha's high energy would make for a very interesting and fulfilling companionship.
Kill Suzuka. Tough call here, but delving deeper we see that Suzuka has some pretty significant vices. She's a cold-blooded murderous mercenary, which can lead to trust issues. She has a penchant for gambling, which is bad role model material. She's also very aloof at some pretty inopportune times, which can be perceived as boring at the best of times and spiteful at the worst. Also pragmatically speaking, I don't think I have the heart to kill Melfina. Killing Aisha? Forget it.
That leaves the diddle job with Melfina. I could go on about debating between Melfina and Aisha for marriage material...but this clip explains my position perfectly:
GO: Bulma, Chi-Chi, and Android 18
A boy has the right to dream. There are endless possibilities stretched out before him. What awaits him down the path he will then have to choose; the boy doesn't always know. At some point the boy then becomes an adult, and learns what he was able to become. Joy and sadness will forever accompany this. He is confronted with a choice; when this happens, does he bid his past farewell in his heart? Once a boy becomes an adult, he can no longer go back to being a boy; the boy is now a man. Only one thing can be said: "A boy has the right to dream.". For those endless possibilities are stretched out before him.
We must remember...all men were once boys.