I may not fully understand what drives the market and what to look for to stay ahead of the game, but I'm trying.. do you typically hold the property longer this time of the year?

Thats a huge swing in expenses.I think you have to run the numbers and work backwards and then find a gross profit that you're comfortable with. 

I have excellent long term tenants who would like to stay.

A good agent will stay on top of those things and guide you through that process, and will make sure to include those contingencies in your offer.

Pick a lane/niche and stay the course.

Any tips or advice for what exactly I should be looking into or staying away from would be great.

For BRRRR investors, seasoning requirements can significantly impact your ability to quickly recycle your capital.While most lenders require you to hold the loan for at least 6 months (aka "seasoning"),Fabulous 5BUY - short-term bridge financing to help you with investment property acquisition.REHAB - With up to 100% rehab financing, you can stay liquid through renovations.RENT - Tenant in place or future tenant.

You’ll need to manage the property more actively, stay on top of furnishing and maintenance, and market it effectively to your target audience.In Cleveland, most tenants looking for mid-term rentals prefer a price point below $2,200 per month.

I am not sure they would be comfortable with me blasting their contact info all over internet. 

How long do they plan to stay?