Converting Residence to a rental

[EJ K.]

Hello all, took first gig as a doctor in Indiana. My wife and I have house hacked twice in a condo and now town home. We are renting the condo and will be renting out the town home. Currently we are looking at 400-550 k homes in grown point Indiana with 0 down and no pMI with a doctors loan. I was quoted a sub 4 interest rate. 
how should I approach this? This is not up to what we want for a forever home but need the space. We have two little ones and another on the way, all will be under 2 when the third is born. Mother in law is moving in and we are hiring her as a nanny. I think my cost will be between 2600 and 2900 a month given the low Property tax, great interest and no pMI and I have saw some rentals going for 3k to 3.5 k a month. 
Big picture should I be looking at this as a future rental? Or just be looking to sell when it’s all said and done. My wife will be done woth training and would likely be the one to qualify for our forever home in 7-8 years from now.

Thanks,

Eddie