Welcome to the forum.
When are you proposing this?
If the hive is thriving, I would allow it to continue unabated and consider action middle of next month or later, even.
I keep saying again and again in posts, there is no rush and more troubles can be brought on by action too early.
You don't say how you propose to requeen. Buying in, removing the queen before any other action, artificial swarming.
Buying in a queen would likely be the best plan, but always has a small risk of disruption.
The preferred method for me, if I only had one colony, would be to build up as much as possible before inducing supercedure cells and then artificial swarming, when the weather is much warmer and more settled.
Are you intending to increase colonies to two? Two is more than twice the ease to manage than one, but little extra effort, but needs more space, etc, etc.
Location may be an issue with a new queen if it is allowed to mate locally - especially in the following generations - and, again with few options on choices of breeding colonies, you are limited in that direction too. Especially if the hive is in an urban environment.
I am not over impressed with your confidence of the size of your colony at the present time, nor with your information handed out for our consideration So my advice, and I have little to go on, is to sit tight and maybe get another box of brood on the hive before taking any precipitate action.
And tell us more about your hive type, amounts of actual brood, your region (at least). It all helps to avoid suggesting something that is less than ideal in your particular situation
Regards, RAB
