I think we'll be forced to learn more (and quicker) if we take on a SFR, but the savings from no HOA (would not buy a home in an HOA from afar) could be easily offset because of the mistakes I KNOW we'll make by not being local. 

Does this still require the normal eviction route or can something quicker be done (e.g. code enforcement)? 

In return he moves extra quick for me to get me closed quicker and with less headache.

This can be done quicker, or if major items need addressed, it could be longer.Repairs are the same way, you are budgeting reserves for a "might happen" scenario.  10% is not a bad number, and there could be years you are above that and years you are below that.  

So, if you want to invest on the side, use your own skills to build a brand that you would want to sell to if you were a seller looking to avoid agents and sell quicker and easier.

Lower fees and a quicker process.

However, you can see north of 15-20+% cash-on-cash return and the velocity of your deals can be way quicker with smaller multifamily or single family deals. 

For this reason, I was also wondering if an agent might be useful for helping me hone in quicker on opportunities as they arise.

If you go SFR you will be able to get into investing a lot quicker because you can put 20-25% down and the purchase price is a lot lower.

Many many ways this can go bad.My advise, do your own repairs as long as you live next door (it's quicker, cheaper, and likely easier).