Backwards house hack?

[Keith C.]

I'm considering moving from my SFH to a SFH split foyer w/ separate entrance in-law suite. I'd then house hack renting the in-law out as well as house I'm moving from.

How do I run numbers to ensure this is worthwhile compared to doing something else?

Current house $2100/mo mortgage (8years left); should rent for $2200-$2500

Moving to place that’s $440k; 5% down conventional renting in-law for $1200-$1500; mortgage should be about $2600

I can provide any other numbers/factors/variables to help get feedback.

Thanks in advance!