As for meeting local wholesalers, networking at meetups or even online could help you connect with the right people. 

Any thoughts/advice for small investors trying to get into larger properties?

By working for a larger corporation you are gaining an unfair advantage, by letting them train and develop you (while you are getting paid) and you do real estate on the side.This idea is not from me, read RichDad. 

Maybe just try finding the deal and sending it over to a larger wholesaler for a JV fee?

I've had them long enough to keep pushing up rents so that I am at the top of my niche, but know not to exceed it because I'm just about at the point where if I raised rents another $50-$100 I'd be crossing over into the lower end for larger units.

I’m currently working towards another rental property (duplex or larger) but I know I still need funds.

For larger properties, some of our clients run another cost segregation study at the time of sale.2) Partial Dispositions - Taxpayers can carve out and dispose of components removed or demolished from a building.

Also make sure to build on a property located in a desirable location with larger pop density and if holding for rentals, charge median rent for that market as lenders want to see a bigger pool of buyers/renters available to occupy/sell. 

He has an online network called Financial Friends Network.

I see some larger single family homes in areas that appear to be zoned R2 that, at least from a physical perspective, seem like they could work for this.