Outside of whatever properties you decide to purchase, give your $350k work to do. I recommend putting that in to some type of investment account producing dividends and other long term growth vehicles. Then leverage that investment through margin lending to purchase your properties. The margin payback will happen outside of your property purchases, your interest on the loan is deductible, and you aren't spending your cash. Remember, it doesn't take money to make money, It takes other people's money to make money.
Personally I did this around 2 years ago and have purchased 3 mobile home parks and multiple SFH with local bank financing. We are now producing over $200k year gross income with $83k debt service. Investment account has a 34% internal rate of return at the moment. We have gone from essentially no retirement, to excess funds while also producing generational wealth for our girls.
Your best deals will be found off-market, so partner up with a few realtors in your area. Get a great accountant and locate a few attorneys- trust planning and real estate. I also have a financial advisor. If you are lucky enough to get the right people, they are going to take great care of you as you progress.
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