How prevalent are sub-to's?

[Matt DuSold]

So I have been trying to figure out my business plan as I am studying REI. I am told this is an essential part of starting so you know what you need to do year by year and what not. My main question is how often are you able to close a sub-to deal? I know a lot is heavily involved in how much you market and have the possibilities brought upon you, but would I be able to get a ball park answer from anyone?

I will be going into a 3 year graduate program next year and in my ideal world (ultimate goal) I would like to have about 30-40 properties before I am finished in those 3 years. I do have money saved up but I would like to keep that money for myself and not have to worry about putting any money down for deal (especially while I am in school). My goal is to have the 30-40 properties and then also wholesale to have other income. I would also like to take some of my money I were to get from wholesaling to pay off the homes and have a HUGE stream of passive income while I am at a very young age. But, this all goes back to how many properties I would be able to acquire via sub-to. Thanks for any help!