If you want to know whether the HU in question will sound ok...probably will. Your head unit should only represent your goals for the installation. If you choose to get into the hobby then it might be beneficial to grab something like a cda-9887 from alpine or the 800prs from pioneer. They have features and options that will take you a while to wrap your head around.
But personally, if it does what you want...who cares what we think? If you decide to get into SQ or SPL or something rather...get ready for a lot of reading!
Pre-out voltage and cross overs aren't that important at this stage of the game. DSP's and cross overs are easily added. Your HU doesn't HAVE to include them.
