Small mortage vs using a couple helocs

[Spencer Howe]

Debating between a cash out refi but our rate would go from 2.8 to 3.1 or use an existing heloc we have and getting another on another property to raise 230k. 
We will be using proceeds from a upcoming sale and doing a 1031 but need to get around 400 for the next purchase. 
not sure which way to go, one advantage is the helocs we can pay just interest and use money for the remodel and then just sell the other houses off when we are done. Might be a bad idea that’s why I’m asking

Thanks