First Home Buying Experience: What inspections should I get done?

[Brielle Phillips]

Hello Everyone!

This is my first post and I am somewhat new to the Bigger Pockets community.

I am looking into buying my first home (duplex) and house hacking. The home was built in 1910 so I am nervous about major repairs that might need to be done  right off the bat and not being able to afford/be strapped having to get them done. I do know the roof is five years old, one hot water heater is five years old and the other is ten. From what I have read I should really be looking at the plumbing and electrical? What specifically should I be looking to get inspected? 

Also, currently there are long-term tenants upstairs who are paying $850 a month with no lease. The seller says they have no issues with non-payment from the tenants and they respect the property. The rent SHOULD be higher ($1,000/month) and I know they should have a lease agreement. How would you handle this situation? Should I gradually increase the rent starting with $900/month and have them sign a lease? I would like to have them stay as we will have an overlap of three months from breaking our current rental agreement and closing on the house. It will be helpful to have that rental income coming in, especially during that overlap period....

Please share any and all advice!!