Keep your downside risk low as you build up both your financial position and your expertise.  

The downside is the hassle and expense (in Maryland we have to pay $400+ filing fees every year to keep the LLC in Good Standing).The upside is the potential for limited liability, however I've heard from various lawyers that the corporate veil is easy to pierce unless the LLC is completely separate from anything in the owners personal life.

The only downside is if you end up needing the entertainment center anyway for a dvd player, dvd, or media device.

Downside is most tenants are going to want a longer term starting point if they're moving into a new place. 

This is true.Depending on your situation, it can take a quite a few years off the length on your loan and save you a ton of money.The downside being that you will have less cash for your next deal.

I've considered buying some land and then having a slab and a manufactured home put on it Vs the Std. site-built home... curious if there are any "down" sides.

Being young and highly optimistic is understandable but as long as he calculates the downside if it does not work out in his favor he should be fine. 

YES it is worth it, if you have the passion.Yes it will be work, but sounds like you WORK everyday already.What a great opportunity you have, you could specialize in "Military Families" and/or "Working Moms" - who better to understand their needs.The downside will be, you will need to get a license in which ever state you end up moving too, each state may have different requirements, test etc to get licensed.

Fairly Good School zone (Prosper ISD).Down side: Poor workmanship, cheap appliances and floor tiles with carpet.

They almost certainly don't have the upside that a So Cal property would have, but they likely don't have the downside risk a So Cal property would have either.