Alright, so, here's basically why using a macro for all 3 combos is a bad idea:

The /wait 2.5 command is actually /wait 3, which means you are missing .5 seconds every hit of your combo macro, which will add up... pretty quickly. Manually pressing each button, which is pretty easy, gives you 0s downtime. You just hit the first button, then mash the 2nd button, then mash the 3rd, then repeat. I understand wanting to be lazy (had macros for my combos way back when too) but you're just doing a worse job than you could be. Since you're leveling WAR I can tell you from experience that our most useful tool is Inner Beast - now, how do you get access to using Inner Beast? Building Wrath. You could hit Infuriate, but Infuriate isn't always up. The only other way to build Wrath is through combos (and weaving in Vengeance and Berserk which, like Infuriate, won't always be off cooldown) and the faster you build Wrath the quicker you'll be able to use Inner Beast. It may not seem like it now in places like Brayflox, Darkhold, AV, etc. but if you ever touch Turn 1 with your WAR you will be desperately wanting those extra seconds and those extra IBs.

Combo macros in lower level dungeons are relatively harmless, rarely will you be getting hit super hard and need that IB, but once you make your way into 50 content you'll start seeing how incredibly annoying they can be.

Also, don't jump out of AOEs, there's a positional update delay when you jump and if you were jumping near the end of the cast you're likely going to get hit.