A friend in a campaign I'm in had a fairly effective character who was an Artificer and captain of an airship. Artificers make anything better.
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And, looking at the Prereq's, artificer fits those nicely.
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One more edit: If you want to get the most out of Half-elf, I'd personally go with Deepwyrm Half-Drow out of RoF (for Half-Drow) and Dragon Magic (Deepwyrm racial variant). You get all the benefits (read: Very few) of being a Half-Elf, plus 60 ft darkvision (with no light sensitivity), you're considered a Drow for special abilities and effects (meh), some bonus SLA's (better than nothing), and the actual nice part: Dragonblood subtype, which can be handy to have. You trade your +2 bonus to Diplomacy for a +2 bonus to bluff, but that shouldn't be too bad.
What you gain outweighs what you lose. The only hindrance is getting approval for setting-specific content. Technically, Eberron was designed to fit all content into it, so if this is a problem maybe you can use that as an argument.