There are a variety of answers to the questions you have.

I don't think a 10 mile radius is anything but a one mile could create some pondering unless you've got an investor already there who loves that niche.My guess is you're going to need to employ a variety of strategies to maximize your return.  

Variety is the spice.  

I am an active GC and am currently performing a variety of services to a range of customers.

We always check a variety of internet sources.

All markets from large to small within the state will be considered along with a variety of capitalization rates as long as there is at least one good-credit tenant in place.  

It's not specifically tailored to real estate but rather a blank slate you can customize for a variety of different uses. 

There are a variety of opportunities in Indianapolis, you just need to identify your goals and resources (capital, time, skills, experience level, etc.)

This gives you a variety of options.

Partial 1031 Exchange transactions are perfectly okay and are done for many strategic reasons, including, using of loss carry forwards, creating a cash position, reducing outstanding debt obligations, and taking some money off the table for any variety of reasons.