It also gives you multiple work surfaces so you can have more than one person in the kitchen without getting in each others' way.

If you have no idea what is going on with this capital call, then the bias should be "no" until you understand what is going on and believe that is the best possible use of your hard earned cash. 

My goal is to wholesale some properties single and multifamily to build some capital while fixing my personal credit and building my business credit.

Are you able to go there in person to build your network? 

You are still going to have holding costs and a heloc will just have less holding costs that you would if you were doing a personal line or hard money. 

Lots of loan options can close in an LLC, helocs usually need to close in your personal name.

Quote from @John Friendas: As a person with an average salary, I was wondering what the maximum amount of DSCR loans a lender would give out would look like?

So they price those homes at what a willing homeowner will pay for their personal residence.

In addition, you want a separate bank account for the rental property to separate it from your personal accounts.

Living in one unit and renting out the others allows you to deduct 75% of expenses like mortgage interest, property taxes, insurance, and shared repairs as rental expenses, while the remaining 25% applies to personal use.