I'm about half way finished building two 7 tub rat racks with auto watering system (27.9 x 20.3 x 6.3 - 27 liter/7 gallon tubs). Instead of building a completely separate rack for weanlings, my plan is to use some of the leftover 1/2" x 1/2" wire screen to make ramps they can climb up to the food and water. Do you guys think that will be alright?