Does it simplify tax filing instead of having to account for all the separate individual transactions?

Usually you bring a cashier's check with you to closing.Get a copy of the settlement statement at least 3 days prior to closing to look over all the final details of the transaction and make sure there are no errors.  

Find opportunities that no one else can find, close on transactions that no one else can close, identify value that no one else can see, execute faster and more efficiently than anybody else. 

Realtors are just middlemen in a transaction and can be replaced if they aren't responsive.

You just have to see how the custodians charge for your types of transactions.

We will cross off houses that are too nice(depends on what you are looking for), so we don't waste money on those houses.

Wholesalers (like me) who find deals/seller often partner with other wholesalers who can provide the other link in the transaction (buying party).

I would not recommend loopnet in general, as that is where properties go to die.Also much of the commercial transactions that do happen, are never listed.

If you provide any form of financing you run the risk of the CRA deeming the transaction an instalment sale which could have negative tax consequences for both you and the prospective purchaser.While the perspective purchaser is a tenant, treat them as a tenant.  

If you want your license merely to invest, then maybe a small brokerage where you just pay a fee per transaction as opposed to having a commission split.If you do want to do residential sales, of the big box shops there are 2 I think that are superior to the others.