Geometry Help

1. Let $n$ be a positive integer. In triangle $ABC,AB = 3n, AC = 2n + 15, BC = n + 30,$  and $\angle A > \angle B > \angle C$. How many possible values of $n$ are there?

2. Triangle $ABC$ has altitudes  $\overline{AD}, \overline{BE},$ and $\overline{CF}$ If  $AD = 12, BE = 14,$ and $CF$ is a positive integer, then find the largest possible value of $CF.$