@Kyle Fritz Hello and welcome from Tucson! You have quite the plan and it sounds reasonable. Before I try to help you with your questions, know that I am not a lawyer, real estate agent, property manager, neurosurgeon, blah blah blah, nor do I play any of those on TV! The answers are just my personal opinion and experience with being a new investor in Tucson as well. I have been in Tucson since 2008.
First off, your enthusiasm is awesome but don't let it get you into trouble! You mention you don't have the "luxury" of learning the Tucson market. This is a great way to lose money and to set back your investing career. You MUST LEARN your market or use the skills of someone who already knows the market: realtor, other investors and wholesalers etc. Online research is great, but it is not complete! Tucson is a funny place. It has pockets of great neighborhoods interspersed within pockets of "war zones", new houses on the same streets as old houses, tiny track houses next to large custom houses, several schools have closed in the last couple years; just a lot of variables that you can only know by learning your market.
To your questions:
1)When do you need a RE attorney? Depends upon what you are doing and the type of deal you run into. I think most deals can be done with a real estate agent (an investor friendly realtor-I can recommend a few) and an attorney is overkill (just opinion). Obviously, the more complex the deal, the higher the need for legal services. I've closed one property with a realtor and another directly with the owner and the Title company (make sure you get Title insurance). I'm currently working on a deal directly with an owner to purchase 3 properties at once and my attorney is drafting the contract. So it depends. I would start with a real estate agent.
2)Hiring a friend? It sounds good on paper, but trust me, it is a sure way to strain a relationship and cause yourself a lot of headache. If you do use your friend, get everything in writing on what you expect of them and what they are exchanging for their service to you. Personally, I recommend using a management company. I have 2 out of state properties and my management companies take care of everything for 8% of rents (emergencies, repairs, tenants and if a toilet is overflowing, I don't get a phone call!). Also, when repairs are needed, they are usually much cheaper through the management company because of their "economy of scale" factor.
3) Where to search for property? Everywhere. BiggerPockets, Craigslist, Zillow, wholesalers, realtors, newspaper, local REIA etc.
4) About your purchase price of $150,000, I'm sure you already know multiplex is valued based on the income it produces and a market cap rate, but I want to break down your purchase price in reverse so you can see what type of property you might be able to purchase in Tucson for that amount. Also NEVER use the PROFORMA to calculate your numbers, use actual verified data so you don't get ripped off!
In order to find your Net Operating Income (NOI) you need to know your market cap rate (again this is easy to determine when you LEARN your market) or the cap rate you wish to achieve with your purchase. I looked at several multi's this week and the cap rates were 6-10% so let's use 8% for this example.
NOI=$150,000*0.08= $12000
For simplicity (and this always needs to be verified), assume your expenses (Taxes, Insurance, Management, Maintenance, Utilities, Repairs, Vacancy=TIMMURV) are 50% of your Gross Operating Income (GOI), so GOI= NOI/0.5
GOI=$12000/50%=$24000
So each unit of your quad generates $6000/yr ($24000/4) or $500/unit/mo. Out of the properties I looked at, depending on the location, $500/unit/mo were Quads with 4-1bd, 1ba units, and Quads with 4-2bd, 1ba units. The 1bd, 1ba units were in a great neighborhood, but the 2bd 1ba were in terrible neighborhoods. My point? $150,000 is a good price range, but by learning your market, you will have a better understanding of what a $150,000 price means in terms of the quality of property you can buy. This understanding helps mitigate the "luck" component of a first investment and helps set you up for more success on your next one.
Whoa! Sorry that got long! Best of luck in your search and if I can help in any way, please send me a message.