I was just wondering if anyone could give me some advice on how to start, and if anyone could recommend some local title companies/ attorneys , that do closing deals with wholesalers.

Do you have a contact who you would recommend at CMG Financial?

I would not recommend using appraisal gaps because if the appraisal is less than the offer 1) you are overpaying for the property based on the value set by a skilled independent appraiser 2) you have to come in with a bigger down which impacts return, reserves, etc. 

Can you recommend experienced lenders and real estate agents for multi-family properties in Jersey City?

This community rewards those who share valuable information openly, so I know you'll find just what and who you're looking for on BP.If you haven't already done so, I'd recommend setting up "keyword alerts".

Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

I would recommend using a DSCR loan right after completion and getting the property rented out.

If you are in a college town I recommend you get started by house-hacking.

And I'd highly recommend doing a once-per-year walkthrough of the property yourself, so you know the manager is working in your best interest. 

I highly recommend finding some events to go to on meetups.com/Facebook/your local REIA website.