Mortgage Options? Listing includes 2 adjacent residences

[John Kevin Griffin]

I'm interested in purchasing a listing in Butts County, GA.  The listing includes two residences on 2 adjacent properties for $600k:

Lot #1 has a stick built home on 5 acres (I plan on living in this residence)

Lot #2 has a detitled mobile home on 15 acres (my parents will live in this residence OR I will rent this residence)

My income is ~$200k, 700 credit score, and I plan on putting $120k down.

It's my understanding that qualifying for a single, "conventional" mortgage for two residences can be "tricky"...and that the presence of the mobile home could further complicate matters?  Based on the details above, could this purchase qualify for conventional mortgage...and if not could you please offer options for alternative financing?  Thanks