Making my little guys a c&c cage ready for Elmo's arrival, need to know how many grids this will need so I have a rough idea of what size wood I need cutting to put the cage on Cos I don't want too much extra wood sticking out...would just over 2 foot wide and just over 4 foot (either size) but appropriate? Haven't built a c&c cage before so I'm a bit of a rookie when it comes to anything to do with them! (it's going on top of a table)