The issue with Biorb Life tanks is that they have been developed with "Interior Design" as the driving factor, rather than suitability for fish, because, as we all know, fish are not real animals, do not feel pain, have a memory span of 4 seconds, so who cares.
With the Life range, the tanks are very tall and not very wide or long. This means that the surface area of the tank is very small compared with a "normal" 60 litre tank. Consequently, oxygenation of the water is restricted - the whole O2 in and CO2 out process happens at the surface. That bubble thing in the centre of the tank is again for "pretty, pretty", and has little effect on oxygen levels, other than causing the ripplies which allow the gas exchange processes to happen. Because there is relatively little surface area for the volume of water, there is relatively little oxygen in the water, meaning that you can't stock the tank to the same bioload as you would in a "normal" 60 litre tank.
There is also another consequence of the tall, thin, narrow design. The actual swimming room is restricted. I don't know of any fish that habitually swim vertically, they all swim horizontally. So where you might be OK with, say, a molly or two in a "normal" 60 litre tank, there isn't the room for a molly or two in the Life.
I would really be looking at the species suitable for a 40 litre tank.
Here are a few suggestions
A single betta, plus 6 chilli rasbora or 6 celestial pearl danio
8-9 chilli rasbora or celestial pearl danio
2 pairs (2m:2f) Peacock gudgeon (also known as peacock goby)
4-5 male endlers.
With regard to moving, you could potentially wait, but we're looking at at least 6 months, maybe more if you suffer any delays (What? Delays when moving house in the UK? Surely some mistake....).
I would fishless cycle as per the article by TwoTank Amin, that others have directed you to. When you stock the tank, keep the bags the fish come in. WHen it's time to move, pop the fish back into the bag(s), drain the tank down as far as possible, go to the new house, and set it all back up again. In an ideal world, the best thing to do is that the tank is the last thing out of the door in the old house, and the first thing in at the new house. I appreciate that practicalities might not allow this to happen. A compromise would be to find somewhere quiet for the fish, and release them into a large bucket until you can set the tank back up.
Try to keep the rocks in the bottom of the tank wet as much as you can, as this, I believe, is the filtration media for a Biorb (ie where the bacteria live), and keeping them wet will keep them at their optimum efficiency.