If you can show an income stream. Salary + additional income and evidence it will continue for the year.
If you can show $4500/m salary + ~$1100/m paid for rent that would be enough.* Showing a signed contract with tenants and income slips, plus perhaps your employment contract they should see that you have a projected income above $65k. In the case of your work, you can also show how solid that income is from previous years. If you've worked there for 8 years, they are less likely to have issues with that compared to a fresh 3 month old job. Unless you have a contract to show them for 24 months+
Normally a house is a burden on a massive scale so you might have to be able to show closer to 6000-6200 a month. (72-75k/y) Having tenants makes you a landlord, which comes with extra responsibilities and as such costs.
While the sponsored can perhaps help you once there (buying groceries, cleaning around the house or w/e) I don't think they can be counted as an income source. That's why the income burden is on the sponsor, you're just lucky if you're sponsoring someone that is a small/mitigated burden. (I am speaking practically/financially, I am not trying to be mean about the person you want to sponsor)
Either way, good luck! And you know, happy new year! =D
PS: All this is assuming the tenant won't be the person you're sponsoring. I have to show an investment of 11 million, this can't include my house, cars, lands or anything else not for commercial purposes. Pretty sure the same counts for this, your sponsor can't be generating the income.
* Or any other combination of the 2, as long as it leads up to $5600/m combined, ideally $6200/m combined