Well that makes a huge difference :wink:
Even so roughly 1/2 or 1/3 of your army is tied up in a fairly static base. An Inspiring Lt could help you some, as could some aircraft to take advantage of the spotters.
It all depends on what you’re playing against then. Your opponent shouldn’t know what you’re playing, so may not be prepared for that artillery attack, but even still that’s 85 points worth of units all tied up on just three mortars. If I were playing against it (as a standard 200 pt army and not one designed to beat it) I’d probably have some heavy tanks and 2x AI units; either Brummbars or Sherman 105s. It all depends on what the rest of your army is and how well they can function.