HELOC or cash on hand for down payment

[Ryen Farnworth]

Hello! This is my first post here. I'm currently living in a rental, own a property that is rented out and buying a new primary residence. I'm trying to figure out if I should use the cash reserves I have for a down payment or take a small HELOC and use that along with cash.
My situation isn’t normal. I have a job that I only work 6-9 months a year but make decent money during that time. For that reason, I save a good chuck of money to live off while I’m not working for 3-6 months. I have roughly $100k in cash right now but I’m thinking of using a HELOC from my rental property and drawing $50k from that along with $50k cash so that I still have my $50k in reserves to live off of when I’m not working. I know that using the cash is best but in my situation I need the money in the bank to live off of during my period of not working. 
We net $700 per month in profit from our rental property so I’m thinking I would just use that to make my HELOC payments and dump as much into the HELOC to get it paid off asap.

Sorry, I’m not good with this stuff or the lingo so forgive me if I made mistakes in my post. That’s why I’m here. Any recommendations would be greatly appreciated! 
Cheers!