I'd really recommend taking a closer look at your PHB II. It has some real nice things in it to make this work! What you want are these:
New Armor Special Ability: Twilight (p.21) - Reduces Arcane Spell Failure by 10%, making it possible for a multiclassed arcane caster (with the necessary armor proficiency) to wear a Twilight Mithril Chain Shirt +1 with 0% ASF.
Immediate Magic (p.68) - Conjurer Specialist: Lose Familiar gain abrupt jaunt. Spell-like ability that lets you teleport 10ft as an immediate action Int Bonus/day.
New Teleporting Spells: Dimension Hop (2nd Level), Dimension Step (3rd), Regroup (3rd), Scattering Trap (3rd), and Dimension Shuffle (5th).
With this you should be able to simply make a Conjurer 5/Fighter 1/Eldritch Knight 8 that would suit your purposes. Abrupt Jaunt will allow for some interesting 10-ft short hops a number of time per day equal to your Int Bonus, BAB +11/+6/+1, twilight mithril chain shirt for some light armor if you like and the same goes for mithril bucklers as well, and CL 12th Conjurer for all those great teleportation spells, up to 6th level spells. Plus the PHBII's new tactical teleportation spells are excellent for your character concept as a battlefield teleporter from teleportation traps to teleporting willing allies to your side, etc.