How should I add new rocks to established setup?

[BaileysTank]

So I have wanted to change my aquascape around a bit but I already have pre-established rock in my tank so below I have a picture of the rock that I wish to add, also you can see my diy box algae scrubber that works amazing, my plan is to add a pump in the sump that gose into another one of those box’s add the new rock in the box also include a clamp light.I then would let this sit for a month or so then make the adjustment in my display area.what are your thoughts/suggestions on my idea or a completely new idea for adding and replacing rock inside my tank?

forgot to mention the picture with the new rock being shown and the algae scrubber are 3 months old becuase the algae scrubber is now full and is hard to get a good picture of and for the one with the new rock, that rock has been in a bucket with a heater and pump cycling so I didn’t want to take it out and reenact this picture again

 

[SPR1968]

You could do as you suggest or you could just put it straight in when you decide we’re you want it, that’s what I do anyway

 

[Gvirgoan]

I just threw mines in and it looked like the others in no time