I'm currently based in the San Francisco Bay Area, which is a super tough market, so I decided to choose Metro Detroit as the market that I want to focus on this year. 

You choose and let them know.

We must choose an investment that is reliable and has high positive returns.

This gives the tenant a choice and usually the tenant will choose to take care of it themselves.

But I will say this, there will hopefully come a time that you will need to choose which career you want more.

You don't need to invest in the same state, you just need to set up systems that can help you manage out-of-state (and choose a favorable market like FL where regulations aren't changing anytime soon).

Once you talk to your tax person you should have a lot better idea as to what will work best for you.Some general tax write off ideas:Does your business need equipment that you can purchase and depreciate aggressivelyCan you do Stock loss harvesting (Sell a stock you have at the loss take that as a write off to help offset gains 3,000 cap I believe) Repairs/ upgrades to existing real estate you choose to use as a write off all in the current yearRetirement accounts (you may also be able to contribute on behalf of kids) 

You can give them a new lease with an effective date the day after expiration and they can choose to sign and stay or to move out at the end of their current lease.If they are on a month-to-month lease, then you can make any changes you want with 30-day notice.

You are young, have no money, yet choose to start your RE business in the most expensive AND most restrictive AND most landlord unfriendly state in the US.I'm not saying it can't be done, I did it for years....however you must admit that if you look at it realistically from the outside, it makes little sense....... :-)

These can vary substantially within even a short distance, but it can understand quite considerably over a long period if you choose property carefully.