Congrats on a successfully executed deal! Good job. You created a deal out of something that most likely wasn't even close to being a deal to a traditional investor. The power of creative deal structuring.
Going forward, I'd suggest learning more creative exits on your sub2 deals, like selling with owner financing on contract for deed or wrap. That way you get all, if not more (or at the very least, most) of your invested capital back, creating an infinite cash-on-cash return. While renting it is good, you still got your 25k tied up in the deal for a long time, but also you're still responsible for maintenance, capex, and vacancies. Based on the numbers you provided (assuming $400 already includes TI), you'd typically account for about 8.5% economic vacancy, plus about 10% for maintenance and capex (given that you just rehabbed it), so this leaves you with roughly $333.5 net profit/month, which puts you at about 16% CoC ROI. This is even lower if you account for property managment costs (because eventually you'll grow your portfolio and will outsource management).
You can also sell on lease option, if you are adamant on taking advantage of depreciation, so there are lots of ways to go about it that may be better than just renting.
