I am building a c&c cage that is divided. One part for my rabbit and the other for my guinea pig. The rabbit is on the bottom while the guinea pig on the top. Just wondering can anyone tell me if you think they will have enough room in this cage? Considering that the rabbit gets one hour of floor time and come september it will be two hours and I am hoping to let the guinea pig have floor time once he gets used to me.

The whole cage is 2X5 and is 4 grids high. The rabbits part is a 2X5 area with a ramp leading to a 2X1 area and from that there is a ramp to a 2X3 area and then another ramp to a 2X2 area.
The guinea pig will have a 2X3 area with a ramp to a 2X1 area and then another ramp to a 2X5 area.

Is that big enough for them? I will be getting them each a friend later on and when I do will I need to expand it or do you think it is big enough?
Oh and by rabbit is 7/8 months, a netherland dwarf mix and about 2 pounds so hes small.