Welcome to Dakka!
I generally like your army list. I personally tend to think Stealths are better than Pathfinders at low points levels, but I’m far from a Tau expert.
I do like Kroot as well. Factors in their favor you may be missing-
1. They’re cheap. You can buy two units of ten Kroot for almost the same cost as one of those units of
FCW you’ve taken with all the upgrades.
2. They infiltrate, which also means they can Outflank. Either can be nice, both for reacting to your opponent’s deployment, or for threatening/taking an objective on his side of the table.
3. Given that an appropriately-terrained table typically gives you lots of places to get a 4+ cover save with an infantry unit,
FCW having a 4+ armor save doesn’t actually make them that much more durable. With normal amounts of terrain on the table, Kroot are usually MORE durable, point-for-point, since you have more bodies on the table with the same save from most shooting. Though they have inferior
LD, and of course, die in droves to Flamers, which ignore cover saves.
So you’re aware, we generally do not want detailed points breakdowns to be posted in army lists, as we do not want info posted on here to be able to be used in lieu of a codex. I have edited your post to remove the individual line item costs.
http://www.dakkadakka.com/core/forum_rules.jsp