Jeff,you can commingle the tenants security deposits, just not with your own account, a separate account just for security deposits. it does not have to be an interest bearing account but i believe if the tenant is there for more than 2 years then you have to have it in an interest bearing account for them. i believe @Chris K. and @Steve Babiak would know a lot better about it.

K fairly new to this website but been investing for over 30 years.

This can be a 401(k), IRA, Roth IRA, SEP, SIMPLE, HSA, ESA.

I tend to agree with @Matt K.. 

@John K. hello and welcome to BiggerPockets!

I've recently discovered the FHA 203(k) loan which would allow me to borrow my renovation budget to help me gain more equity in my first purchase.

As far as the FHA 203(k) loan is concerned it's a decent loan but the conventional renovation loan will beat it out by a mile. 

Am I crazy to think I can get a FHA 203(k) loan or any other conventional loan for that matter with such a short employment history? 

I second the advice of @Marta K.

I won't tell you how much because now that I'm in the business myself it's honestly a bit embarrassing.......He went from averaging (supposedly, I never saw documentation on this) about 30k a month to one month in making over 100+ k.