Using Heloc to buy larger multifamily

[Ian Dale Ibrado]

Will be purchasing a 4plex next year which needs roughly 80 to 100k down payment.  Im thinking, instead of a 4plex at 100k downpayment, Ill use 50k of Heloc to add to my 100k for a total of $150k to purchase a 6plex around 600 to 650k.  Heloc is around 8.5% interest and deals im looking at are 15% coc self managed, theres a bit of spread. Plan is, ill pay Heloc in a year from what I save monthly.  It will allow me to purchase a larger deal rather than a 4plex and be paid within a year.  Its not like ill be using Heloc the entirety of the loan.  What do you guys think?