You will have to make sacrifices regardless of which track in aviation you take. It's just one of the many things we do. Some of us are luckier than others, but it really just depends on the path that you are presented with and where you want to be in the end.
As a CFI, you'll be local based, unless you do a lot of specialty work where it could take you across the country.
Charter operators hauling freight will have nightly runs. Some companies you get the same thing every night, so you'll end up in the same place all the time at least.
Most airlines, as a start you'll get the worst routes/schedules based on seniority.
As far as getting married, you're young, and just getting started. I thought the same thing when I was headed into college.(Not saying you shouldn't, but things happen, people change, needs change)