My wife and I are working on scaling as quickly as possible.

@Tj M.No other reason than if your scaling your portfolio and looking to find a better way than giving your bank account info out to tenants, Zelle is pretty much the same thing.

I have enough put away to purchase a few properties for rentals and kick start everything with a faster scale and keeping reserves on hand.

When deciding between managing your own property or hiring a professional service, consider these key factors: your available time and expertise, knowledge of local regulations, property scale and location, access to reliable maintenance resources, tenant management capabilities, financial implications, emergency responsiveness, and personal preference for hands-on versus delegated management.

@Annie Seuer , who used be a wholesaler and quit doing it, posted on a parallel thread (https://www.biggerpockets.com/forums/93/topics/1194082-5-tips-to-create-a-real-wholesaling-business-and-not-a-chop-shop) that she doesn't think wholesaling can be scaled.

Not sure if it really matters so much at this scale. 4.

I just really want to scale up but lack of resources is what holding me back. 

 - you are the only one that can determine the correct path for you but with your contacts and desire to scale, value adds should be evaluated.  

We use Streamline which is a legacy provider but it is cumbersome and designed for larger scale PM operations (trust accounting, owner portals, etc etc).Just a few integrations we use: Lynx (locks), BookingPal (channel manager), EZCare (HK/Maint Ops), RevMax (Pricing) - There are more, thats off the top of my head. 

After 5 years dabbling in STR's, BRRRR's, and flips, I'm ready to focus on one area and asset class, scale up, and build a portfolio that I can eventually retire on.