Not saying you can't handle it, but going from SFH to like a 20-unit would be a huge task to take on.

Thanks I am working on one of these right now but in a much larger city.

Or you can find a commercial mortgage broker if you're in a larger more competitive metro area. 

Make sure the seller has them all if he's going to hold them as collateral - chasing down titles can be an impossible task sometimes.Also make sure the titles transfer automatically if you pay off the park and that the balance on the park loan drops by the release price on the home when paid.

As I read these REI books they keep talking about how you can be over leveraged, meaning you have small amount of capital invested into a much larger amount.

There's always the possibility of doing a 1031 into one larger property and starting over on smaller residential rentals.

I also mitigate the additional cost by carrying a larger deductible on the property coverage. 

For example, the desire for larger homes with bigger backyards is causing people to increasingly come to the San Fernando Valley from central L.A and for those already in the Valley to trade up in size.

Finding a cash flow property in the SCV or the SFV is not easy and you will have to hunt for a very motivated seller where you can buy at a good enough discount, fix it up, and have it in an area that would support getting close to cash flow which is no easy task as prices have skyrocketed here (although not as much in SCV).

It can be a lot more hands on, more capital intensive, and may be a bit more of a task when just starting out.