5 Not a chapter

I plan on this having the mc of this story having a small harem consisting of three girls by the time he gets to his fifth year of school I already have plans to include Hermione as one but I am unsure of the other two the ones that I am debating on are Susan Bones, Ginny Weasley, Fleur Delacour or should I have him hold off on one slot and have him interfere to save and get Nymphadora Tonks after graduation instead of her marrying Lupin or are there any other characters that you all think would be better choices