buy a house that has assumable low interest loan

[Ed Spear]

We have an opportunity to buy a single family home with an low rate assumable mortgage.  However that will require us to invest an additional $150K which I think would be better used to by a 3-4 plex property.  Does it make investment sense to tie up a additional $150k in a single family home that we will rent out after a year of living there or use that money now to buy the multifamily property?

Thanks