Purchasing from landlord

[Charlie True]

Good morning,

I approached my landlord of 2.5 years about purchasing the property my wife and I currently live in. We have been looking for a duplex for a while but thought we would at least ask our landlord. Luckily, our landlord said she would consider selling and asked us to make an offer. We're making a verbal offer tomorrow in person, our realtor gave us a CMA that put the property between 250k-275k. It's in a great location and the tenant upstairs is an older lady that hasn't bothered us very much (not sure how she is in the landlord's eyes).

Question is, any advice going into this meeting?  We don't want to insult the landlord or scare her away; my wife and I are very serious and excited to get into real estate investing and don't want to let this opportunity slip away.

Realtor said we could request she put our rental income towards the principal.

Thoughts?

Thank you!