I'd do the same thing - add several smaller wattage TITANIUM heaters just in case one fails. I assume you are using a temperature controller with those and not relying on the faulty controllers they almost always come with. Yeah, Ebo Jager are the best heaters but the built-in themostat is still not as reliable as a digitial temperature controller (IMHO). Renco are my favorite controllers since they are NEMA enclosed and relatively cheap. Look for used or good buys (unlress you're wholesale).
PS Currently using a aquacontroller with DC8 on my tank.
Scott
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