Looking to install an outdoor speaker system in a backyard area of our to cover roughly 4,000 square feet. I was initially looking at the Martin Logan Foundation Series setup, but I was led to Evid 6.2 which may be better for larger volumes when needed and have better longevity. Several questions I have below…

Is running these in 70v configuration best? I think mono would suit my needs far better than stereo.
What size amp would I then need if I’m looking at potentially running 6 of the Evid 6.2 speakers and potentially an outdoor sub? Is this where I would buy the “T” versions for taps if I’m not mistaken where I can adjust the power the speakers are receiving or does this not apply?
When wiring, can I splice the wire once I come out from the house since I’m keeping the receiver and amp indoors in order to shorten the wiring distance or must I daisy chain from one speaker to the next?