TheSquid
Your idea is good, I think. RDD14 adds 18 HP and loses 14 skillpoints, but more importantly I realised that postponing ED to level 36 lets you end on 25 DEX and grab Armor Skin for +1 AC at the cost of 1 Reflex. I think that does make the build better! Update:
Bard(16), Red Dragon Disciple(14), Shadowdancer(10), Elf
STR: 16 (26)
DEX: 16 (25)
CON: 10 (12)
WIS: 8
INT: 14 (16)
CHA: 12 (14)
Elf: (Hardiness vs. Enchantments, Keen Sense, Low-light Vision, Skill Affinity: Listen, Skill Affinity: Search, Skill Affinity: Spot, Sleeplessness)
01: Bard(1): Dodge
02: Bard(2)
03: Bard(3): Weapon Focus: Rapier
04: Bard(4): DEX+1, (DEX=17)
05: Bard(5)
06: Bard(6): Mobility
07: Bard(7)
08: Shadowdancer(1): DEX+1, {Hide in Plain Sight}, (DEX=18)
09: Shadowdancer(2): Power Attack, {Darkvision, Evasion, Uncanny Dodge I}
10: Red Dragon Disciple(1)
11: Red Dragon Disciple(2): (STR=18)
12: Red Dragon Disciple(3): DEX+1, Cleave, (DEX=19)
13: Red Dragon Disciple(4): (STR=20)
14: Bard(8)
15: Red Dragon Disciple(5): Improved Critical: Rapier
16: Red Dragon Disciple(6): DEX+1, (DEX=20)
17: Shadowdancer(3)
18: Red Dragon Disciple(7): Great Cleave, (CON=12)
19: Red Dragon Disciple(8)
20: Shadowdancer(4): DEX+1, (DEX=21)
21: Red Dragon Disciple(9): Epic Weapon Focus: Rapier, (INT=16)
22: Red Dragon Disciple(10): (STR=24), (CHA=14)
23: Bard(9)
24: Bard(10): STR+1, Overwhelming Critical: Rapier, (STR=25)
25: Bard(11)
26: Bard(12)
27: Bard(13): Devastating Critical: Rapier
28: Bard(14): DEX+1, (DEX=22)
29: Shadowdancer(5): {Defensive Roll}
30: Bard(15): Curse Song
31: Shadowdancer(6)
32: Shadowdancer(7): DEX+1, {Slippery Mind}, (DEX=23)
33: Shadowdancer(8): Great Dexterity I, (DEX=24)
34: Shadowdancer(9)
35: Shadowdancer(10): {Improved Evasion}
36: Red Dragon Disciple(11): DEX+1, Epic Dodge, (DEX=25)
37: Red Dragon Disciple(12)
38: Red Dragon Disciple(13)
39: Red Dragon Disciple(14): Armor Skin, Epic Prowess
40: Bard(16): STR+1, (STR=26)
Hitpoints: 348
Skillpoints: 269
Saving Throws (Fortitude/Will/Reflex): 20/22/29
Saving Throw bonuses: Spells: +7, Mind Effects: +2, Traps: +2
BAB: 25
AB (max, naked): 37 (melee), 33 (ranged)
AC (naked/mundane items only): 31/35
Spell Casting: Bard(4)
Alignment Changes: 0
Hide 43(50), Lore 8(27), Move Silently 43(50), Perform 28(30), Spellcraft 32(35), Taunt 43(45), Tumble 40(47), UMD 32(34)
01: Hide(4), Lore(4), Move Silently(4), Perform(2), Tumble(4), UMD(4), Save(2),
02: Hide(1), Lore(1), Move Silently(1), Perform(3), Tumble(1), UMD(1),
03: Hide(1), Lore(1), Move Silently(1), Perform(1), Tumble(1), UMD(1),
04: Hide(1), Lore(1), Move Silently(1), Perform(1), Tumble(1), UMD(1),
05: Hide(1), Lore(1), Move Silently(1), Perform(1), Tumble(1), UMD(1),
06: Hide(1), Move Silently(1), Perform(1), Tumble(1), UMD(1), Save(1),
07: Hide(1), Move Silently(1), Perform(1), Taunt(2), Tumble(1), UMD(1),
08: Hide(1), Move Silently(1), Tumble(1), Save(5),
09: Hide(1), Move Silently(1), Tumble(1), Save(10),
10: Spellcraft(4), Save(10),
11: Save(14),
12: Save(18),
13: Save(22),
14: Hide(5), Move Silently(5), Perform(4), Taunt(4), Tumble(3), UMD(7),
15: Save(4),
16: Save(8),
17: Hide(3), Move Silently(3), Tumble(5), Save(5),
18: Save(9),
19: Save(13),
20: Hide(3), Move Silently(3), Save(15),
21: Save(19),
22: Save(24),
23: Hide(3), Move Silently(3), Taunt(16), Tumble(5), UMD(4),
24: Hide(1), Move Silently(1), Taunt(1), UMD(4),
25: Hide(1), Move Silently(1), Perform(2), Taunt(1), UMD(2),
26: Hide(1), Move Silently(1), Taunt(1), UMD(2), Save(2),
27: Hide(1), Move Silently(1), Taunt(1), Tumble(5), UMD(1),
28: Hide(1), Move Silently(1), Perform(3), Spellcraft(1), Taunt(1),
29: Hide(1), Move Silently(1), Save(7),
30: Hide(1), Move Silently(1), Perform(3), Spellcraft(5), Taunt(4),
31: Hide(1), Move Silently(1), Save(7),
32: Hide(1), Move Silently(1), Tumble(5), Save(9),
33: Hide(1), Move Silently(1), Save(16),
34: Hide(1), Move Silently(1), Save(23),
35: Hide(1), Move Silently(1), Save(30),
36: Spellcraft(22), Save(13),
37: Save(18),
38: Save(23),
39: Save(28),
40: Hide(5), Move Silently(5), Perform(6), Taunt(12), Tumble(5), UMD(2)