7 Question..

I have been writing and doing research, while I like harems, well not catch them all, I wanted to ask.. in this world alone, I think loki is the best match for the Mc, and while she won't come with him right away, still she will be the one that lords over the other two women. So should I keep it like this or should I pick someone else in this world. The Mc is older and besides a few people, I don't think he needs anyone else. I just want a idea of what everyone is thinking, single romance is easy, but harem romance is a different story.