Many times in school you see these taught together. Has anyone on here done this or if you have done both subjects do you think they would be okay together?

I am/have been thinking

9th Alg 1- about to finish (not T4L)
10th Geo
11th Alg 2
12th Trig/Pre Cal

Unless he gets done with Geo early because I think that subject he will consume quickly. If that occurs then 12th would end up being Calc 1.

Anywho... any thoughts on doing them together?