Got the
Ares 90 post-game Skell a couple days ago and... holy crap. It's really cool, it's super badass, and as amazingly game-breaking as I was told it would be, but also as much of a grind as I was told it would be. Unless you've already gotten close to maxing out all the systems by the time you get to the post-game, it's gonna take a while. If you want to build it (or any high level post-game Skell for that matter), get to Blade level 10 ASAP to increase your reward ticket capacity to 9,999 and start saving/farming those immediately. You're gonna need a lot of them.
Anyone have general tips for someone who will probably be picking away at this 1/2 hr - 1 hr a night? Don't have the luxury of setting down a 2-3 hour chunk of time with my current schedule, expect it might make it difficult to make progress in this game.
Get through the first three story chapters as quickly as possible. If memory serves, the first two chapters should be doable in an hour each, but the third might be a bit longer. At this point you can at least start installing data probes and explore Mira, which is probably the best use of your time in short bursts. That way when you do have more time, you can jump into the story without having to worry about clearing the requirements for story missions (since you need certain percentages of Mira or a specific continent explored to accept the later ones). Also, it's a good idea to familiarize yourself with what the icons on the segment map mean (
http://xenoblade.wikia.com/wiki/Segment_Map).
Thought of another one: when your Blade level goes up the first couple of times, upgrade your mechanical field skill instead of biological or archaeological. You'll get more mileage out of a level three mechanical field skill early in the game since a lot of data probe installation sites require a mechanical field skill higher than level one.