Be cautious about ASU’s costs, since the $16.5K is fixed but base tuition goes up every year (5% or so in recent years), which makes the net cost go up much faster (has been ~10% pa for tuition). Also, the honors college costs quite a lot extra.
The cost of WUE schools will not increase so fast since you just pay 150% of instate tuition. OP has not commented on Utah (which is very strong for math and good for CS), and there are plenty of other WUE options in the mountain west region. OP should see if any of these might be preferable to OSU.