Hey @Nitt , when your looking for one of those small fridges, get one without a mini freezer in it. They have the tendency to leak all over. You want straight fridge, for your seed storing purposes.
If your just looking for a good mother to grow in continuing cycles, start all five(I’m assuming they’re fem seed). Veg them till they are mature (branches start to alternate, instead of growing side by side, pre flowers show) without trimming anything. Once they are in they’re final pot, label each, 1-5 or whatever made it that far. The day you put them to flower, trim the lowers of each potential mother and put the fresh snips in a zip lock, liable corresponding number on it with a sharpie, and put it in a shoe box, at the bottom of your fridge. You now flower out the seed plants and observe. You have back ups of each in the fridge and they will last 6-8 wks in there. By 6-7 weeks of flowering and observing, you should have an idea which ones you like the best and you can pull the corresponding snips out of the fridge and root them. This way you save space and time by not holding cuts in veg that you’ll never grow. If you can’t tell which one’s are for you by 6-8 wks, than root them all and you’ll have a chance to get a smoke test in before your over run in the veg room. Keep the one or ones you like the best and fill your flower room with those.
I hope that makes sense. 
