Oh, I think you need to ask yourself what is your character's primary strength. It doesn't seem to have a clear focus on AC, DPS, or healing/support.
I don't see good AC potential here. If you go THF, I assume you'll have a low Dex. In which case, don't take Dodge and Combat Expertise. As an Evasion Acrobat/Paladin in light armor and low Dex, I don't think you'll get the AC numbers you want.
Also, with THF you lose some of the DPS benefits of Paladin -- double benefit from DM, DF, double Smites and Sacrifices. And without Improved Crit, you damage is even further reduced.
The Dragonmarks then take up 3 of 8 total feats for decent but un-Empowered self-healing. This worries me, since you don't seem to have a solid defense
or offense planned out either.
I really think you should add Dex and consider TWF, dropping the Dragonmarks for GTWF, Extend, and IC:whatever. But even if you don't, check out this 13/6/1 build called
the Hurtlocker. Maybe that will give you some ideas on how to tweak more power and survivability into this! Otherwise, you may want to consider Fighter simply to get enough feats to do more damage, or for more Shield/Defender style options.