Ah, lets see... if the feats can be changed I would go with:
Feats: Weapon focus: Falchion, Weapon specialization: Falchion, Dodge, Expertise, Mobility, Combat reflexes, Expert tactician, Superior expertise, Improved crit: (falchion)
Rogue special ability: Opportunist
Equipment:
Falchion +1 (Sure Striking/Keen/Adamantine) 24,375 gps
Cloak of resistance +3 9,000 gps
Mithril Chain shirt +2, invulnerability 25,000 gps
Ring of blinking 30,000 gps
Ring Protection +2 8,000 gps
Belt of Giant strength +4 16,000 gps
Gloves of Dexterity +4 16,000 gps
Boots of speed 8,000 gps
Googles of Night 8,000 gps
Amulet of Natural armor +1 2,000 gps
Admantine Dastana 2,075 gps
148,450 gps
Use the last 1,550 gold for healing potions, masterwork potion belt ect.
This should modify your stat block as follows:
Dravyn Stark: Male Human Rog10/Ftr4; Medium Humanoid ; HD 10d6+20 (Rogue) , 4d10+8 (Fighter) ; hp 82; Init + 7; Spd 30; AC 29 (10 + 8 armor + 7 Dex + 1 natural + 2 deflection); Atk + 14 base melee, + 17 base ranged; AL CN; SV Fort + 14, Ref + 21, Will + 8; STR 13(17), DEX 20(24), CON 15, INT 16, WIS 13, CHA 11.
Melee: Falcion +17/+12/+7 (Damage: 2d4+7 + 5d6 sneak attack)
Note: you count as invisible because of blinking (+2 to hit and denies dex, 20% miss chance), can attack any creature upto a +5 damage resistance.
Notes on armor: 5/+1 damage resistance, missed 50% of the time from ring