My vote would be for a used commercial walk behind with a 36-48in deck. You should have no problem finding one in good shape for $2k with a sulky so you can ride behind it instead of walk. They will last forever on your yard.
Just wondering if sitting outside in the elements full time has something to do with the sunroof being prone to leaking. My truck is parked inside and doesn't get driven unless the weather is nice so I'm just curious.
Not much info on the specifics of the kicker sub, anybody know how big? power?
Seems like for $700 you could buy a box to fit under the seat, 800W amp, and nice 12in sub and still save some money.