I agree with @Ashish Acharya if you're interested in reinvesting the proceeds into another investment property and your goal is to minimize your tax liability a 1031 would work out well for you.

If you’re set on a duplex with minimal rehab, an investor focused agent should have a strong network of contractors who can give you quick quotes, so you don’t wind up with any pricey surprises.

Some are led by seasoned investors with a wealth of knowledge, while others may be run by people with minimal experience.

You can't decide which one to choose based on the minimal information you provided.

What if A brings downpayment and B will manage it and minimal rennovations are needed.

I've asked my clients a similar question and have developed tools for them to minimize this, but I find there are a few different types of clients.Manager managed - these folks have no issues as they simply upload their year end statement from their property manager, their 1098 mortgage statement and any other one-off expenses they may have paid for outside of the management company. 

I'm an in-the-dark investor who has been unable to get an email address updated despite emails through the siteand a coupleof actual phone conversations.

If you’re set on condos, ensure you’re targeting areas with strong rental demand and minimal HOA restrictions.Regarding an LLC, it’s great for liability protection, but it won’t necessarily give you tax benefits unless structured strategically.

Starting small, like with a duplex, is a good way to get your feet wet and minimize risks.Good luck!

Minimize expenses and pocket as much of that $60k as you can.