Primary residence home equity use

[Pat Noyes]

I am looking at one of two options. 1) get a HELOC on my primary residence and use it for a 20-25% down payment on a multi family. OR 2) sell our home and use the proceeds for a) 3.5% FHA or 5% conventional down payment on a primary single family to live in for 1 year then rent out PLUS b) 20-25% down payment on a mult family unit. Thoughts and/or other ideas?