There is no big concern with either. pumps will last for many years and will typically result in lower utility bills which is a plus for tenants.

A tip I got from @Steve Vaughan is to post a few ads on CL or something similar in your area, without the address of course, to figure out the demand in your area. 

That said, safety of your tenants should be of your utmost concern.

@Adam Widder If you want to be an investor and do not want to wait 2 or more years to start from the day you get back then you should also be concerned with your type of employment. 

God will be the least of your concerns if your bank finds out.

They also inspect BEFORE you buy so they can catch you doing it yourself.Although I have a Belleville address I am actually in the county.

I was pretty much the same situation as you are in, except i did not think quick enough about the additional pre-close negotiations mentioned above.In my case time after closing i dove in to set expectations and address/remediate all concerns from the previous landlord, and since then i haven't had any troubles.Thank you for the post!

I'm not concerned.

There are a lot of good training certifications for dogs out there now that could potentially help in easing concerns about a dog's destruction level.

@Ranga Ramanathan Property taxes are going to be a major concern for NW Chicago suburbs.