I feel like I e read before that 25% of net profit is a good rule of thumb to set aside for those taxes, but what have you all found to be true? 

Sure, it will take a few days but worth its weight in gold. 

@Jeremy Altdorfer  Just adding to the above, the rent should be on Sch E of their tax return. 

I would actually suggest you spend that money to get your real estate license and hang your license with an e-brokerage. 

I do these project, but I am going to PM you the contact info for an A/E with a lender that does larger investment projects like this.

I know a vacancy is tough and it can be hard to find tenants in the winter, but you have to weight the costs and benefits and decide.If it's harder to find renters in the winter, try offering a month-to-month lease just to get through the winter, then move back to a one-year lease in the spring.

stacks of capital for unexpeeccted repairs, zoning, headaces you simply can NOT forse e until it happens, and 6 months of the mortgage in reserves for vacancy/ job loss. 50k an d8k in credit is mayb safe to by 1 property. that 38k you think is left, not nearly that will be left over. so what is leeft..... theere are your reserve. you have noting left to get another property

This might lighten the weight of the tree toward your property;  so this might help or not. 

Business credit is largely irrelevant until you get into the true CRE and commercial lending space, and even then, the key principles are weighted heavily.

E  I ended up joining Thach's mentorship program "Springboard to Wealth" after not really finding good support on Bigger Pockets.