I am feeling like you are a SC guy more than a TT guy. But, I see no reason to mess with the twin SC.
Install, setup, and tuning. These factors, more so than your decision in which system to use, are what is going to determine how well this plays out for you.
Your power goals are conservative, well within the reach of any choice in forced induction, and well within the safe limits of the factory engine.
All aftermarket kits leave things open to interpretation for the installer. The install and setup will make-or-break the whole experience for the user. Done with an attention to detail, and tuned correctly, you can very possibly have no perceivable increase in maintenance for the first several years.
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