I'm looking into buying this case and am mostly confident in building a pc aside from installing the motherboard. Does anyone know if this case comes with the motherboard standoffs already installed for a standard atx motherboard to just drop it in no hassle? If not, can they easily be removed by hand or come with an adapter to remove them? The front of the case looks like it's intended for 3 120 fans but can also fit 2 140 fans. Will the 140mm fans be cutoff by the case case or will they still provide good airflow?