No one can tell you that.
A general rule of thumb is your yearly income x 3 = a safe loan amount. But if you have massive debt (which I doubt) that could change it a lot.
You might qualify for more, but be careful about making yourself house poor.
Since I have no idea of what your numbers would be consider the following example ($9k month income) and advice.
Disregard what any lender will tell you.
Take your monthly take home income subtract your normal expenses and expenditures from that. ( $9k - $5k) Add your rental payment to that amount. ($4k+ $1k)Take off 20% ($5k-$1k) for a safety margin (and saving for the future) whatever is left ($4k per example) will be a very safe amount for you to spend. That amount has to include your taxes, insurance, electric, water etc. That amount could be much higher or lower than a lender will allow. But it will be safe for your lifestyle. Doing it this way you will be able to handle it when unexpected expenses come up.
How you live your life can greatly change what you can comfortably spend on a house. If you enjoy a lot of recreational activities that cost a lot of money the loan calculations do not take that into account.
It all depends.
That means you should really go not from what you can get a loan for, to what you can comfortably afford each month including taxes, insurance, electricity, repairs and so on. If you know you can afford $1k a month for a payment ask what amount of loan you can get for that. Look at different length of times can do for you. Mortgage can be gotten in many different years. 15, 20, 35, 30, and even 40 years are possible. You can even get oddball time frames like 12 or 22 years. The shorter the time the better your wallet will be.
Do you have a good fico score? If below 620 it may be almost impossible to get a loan.
Interest rates now seem to be in the 5-5 1/2% range.
One last idea for you, if possible save at least $5k of your money. It would be nice to have a cushion just in case you lose a furnace, car transmission, or anything happens.