If tax returns and DTI is an issue look at private institutional lending. 

A bank can issue a loan specifically to "bridge" your down payment for your next property before you sell your own property. 

The structure and roof is good with some issues I want fixed:-covert fuse box to 200amp cb panel-storage shed/garage water damageI’m seeking advice on how to make an offer with either the seller repairing these items (another investor I’m not sure I trust to do it properly) or asking for funds at closing (escrow). 

I’ve thought about helocs but the only issue is finding a home that I could purchase with the heloc money.

Unless it's a catastrophic capex related issue, the need for a capital call does not come up overnight for sponsors and neither should it for LPs. 

The property I was looking at (the wholesaler is seeming to have some issues with the seller aka I think the deal is dead) was in Maywood.

As an owner, what are the top considerations or issues you face when deciding to bring on a property management company to help manage your units?

The ones I dealt with usually just tell me to call when I was done as they didn't want to write up all the issues that I was going to address anyways.

We’ve had some issues in the past and now currently where the payment will be deposited into our account but the next day it will bounce back out due to NSF.

Shouldn't your broker be involved in this security deposit issue?