1 Crusader
2 Crusader
3 Cleric
4 Swordsage
5 Swordsage
6 RKV
7 RKV
Mhhh... this gives at level 1, 2, 4 and 5 a level 1 stance, and at level 1, 2 and 4 access to only 1st level manouvers (initiator level for swordsage is only 2.5 at level 4). That means that only at level 5 you'll get 1 2nd level manouver, at level 7 one 3rd level manouver.... The stance you'll gain is at level 6, when IL for RKV will be only 4.5, so no thicket of blades there, so I don't see how you can get it.
I'd try to get swordsage 1 at level 5, so you can pick several lvl 2 manouvers from the 6 you'll get to know then. Crusader 3 / cleric 1 / swordsage 1 / RKV 2 for example would grant you thicket of blades at level 6 as well (if continuing the crusader IL-progression with RKV).