However, I am interested in wholesaling or fixing and flipping to generate capital to buy.

My broker is saying the broker fee is a standard $3000 amount bc the amount requested is under 100k and advised the minimum I am able to to pull out is $75k. 

Fix and flip?

It's great to look for BRRRR's but you might pass by some great fix and flips with too narrow a search.

Have 100k sitting and a few real estate investors in my network who have inquired as to whether I’d be interested in helping to fund their down payments for fix & flips. 

There are HELOANs which are second position loans that you can use, typically 30 year fixed.

As tenants have left we've been fixing up the apartments so that everything is working and is freshly painted and clean again.

I like the Tempe & Phoenix Area (Encanto village, Coronado district) for multi family they have a good amount of multi fam units that are older and you can add value quite early.

This is great if you have the right amount in your mix.So, to answer your question, I'd like you to classify your debt and consider getting read of the negatively leveraged stuff.Hope that helps.

A contractor fixed all of it for about $1500.