Only do what you or your husband know for the first year. It sounds like you should do lawn and landscape, with a couple small hardscaping patios or walkways. If you've never done irrigation, then forget about it, it's not just laying houses and a sprinkler head in the ground.
There is an Old Blue Chair for each and every one of us, we just have to find it.
2006 GMC Sierra 2500hd crew cab
BOSS 8'2" Power V
Hustler X-one 60" 3 bin bagger
Toro Proline 36" wb w/t-bar controls
Shindaiwa T254, Echo trimmers, chainsaws, pole hedge trimmer, pole saw, hedge trimmer
Shindaiwa 633 and Echo 760LN