if you want more sound you have to unison to make it more fat and possibly louder. Remove verbs and delays and other effects that only make sounds less loud because of the headroom it needs to prevent distorted sound.
Also try to use as few layers as possible to get te loudest tune out of a virus for lifeplay purposes. That i think is the key for life play because with creating music in your daw you can use effects to pump sounds and life it gets a bit more complicated.
The best way is to have not more than 1 or 2 layers in your tune for max loudness out of the box.