Or, if I'm a fourplex owner, is it worth the extra effort to update the kitchen a little, take better care of the landscaping, etc. or is that just going to drive away the "typical" fourplex renter? 

I inherited the lot long ago and this is a one time effort to maximize the value of the lot.

Check with your 401k administrator to see if this is possible with your plan through an "in-service" distribution.There is no financial level of qualification, but setting up a plan requires that you have sufficient capital to A) conduct the type of investments you wish and B) generate sufficient returns to justify the cost and effort of establishing the plan.Plan services and fees vary greatly.  

Focus your efforts and energy on your first couple closed deals.

Very interesting, seems like a major improvement with what looks like somewhat minor effort.  

I've never seen such a pathetic effort by set guys to make it look like a bunch of kids had a party and trashed the place.  

There´s no way on earth that is a genuine offer @Stephanie Beard.

You will save tremendous amount of time and effort if you do a thorough pre-screen.

and also any tips / lessons learned from your wholesaling efforts. 

You already have experience and with additional effort, will quickly climb the REI ladder to its pinnacle.