Ash Shafi'i (the madhab I follow and presuming most Somalis) states it's preferable to keep to one wife, so although there is a split in opinion I'd go off whatever school you followShaykh Ibn Baaz (may Allaah have mercy on him) was asked: Is plural marriage permissible in Islam or is it Sunnah?
He replied: Plural marriage is Sunnah for the one who can afford it. Allaah says (interpretation of the meaning):
“And if you fear that you shall not be able to deal justly with the orphan girls then marry (other) women of your choice, two or three, or four; but if you fear that you shall not be able to deal justly (with them), then only one or (slaves) that your right hands possess. That is nearer to prevent you from doing injustice”
[al-Nisa’ 4:3]
And it is Sunnah because the Prophet (peace and blessings of Allaah be upon him) did it. He had nine wives and Allaah benefited the ummah through them. This is one of the things that applied only to him (peace and blessings of Allaah be upon him). Other men are not allowed to have more than four wives.
There are many benefits in plural marriage for men and women and for the Muslim ummah as a whole. Plural marriage enables everyone to lower their gaze and guard their chastity, to have many children, and for a man to take care of many women and protect them from the causes of evil and deviation.