If you are going to take fighter levels for the ranged weapon proficiency, heavy armor proficiency, and feats, shouldn't you go levels 1-3 warblade, levels 4-5 fighter, and level 6 warblade? That way, your effective level for maneuvers is 5 when you take that 4th level of warblade, making your second stance a 3rd level stance instead of a 1st level stance, and you get a feat every level except 2nd all the way through 7th level (and 9 feats for the first 12 levels). For example:
1 Warblade 1 - First Level Feat
2 Warblade 2
3 Warblade 3 - Third Level Feat
4 Fighter 1 - (Fighter Bonus Feat)
5 Fighter 2 - (Fighter Bonus Feat)
6 Warblade 4 - Sixth Level Feat, New Stance: 3rd Level
7 Warblade 5 - (Warblade Bonus Feat)
8 Warblade 6
9 Warblade 7 - Ninth Level Feat
10 Warblade 8
11 Warblade 9 - (Warblade Bonus Feat)
12 Warblade 10 - Twelfth level feat, New Stance: 5th or 6th level*
etc.
* Note: I mention "or 6th level" because you technically could take a 6th level stance, being an effective 11th level for maneuvers and stances. You do not have access to the two schools that offer 6th level stances, however, though they are good ones. But then, you have enough feats to be able to afford to take a martial study or two, and then a martial stance, and get one of those stances if you want.
Heck, you have enough feats to go into the Master of the Nine Swords prestige class, which a great class with hideous requirements.