Lot's of influences along the way to get to where we are now and how we operate.  

What else should influence my offer? 

Estimating demand is tricky.. demand is HEAVILY influenced by the type of house, and type of furnishings (and thus, pictures)... so...

This will boost your income and your tenants will thank you.Give it some thought.

It can be a nice boost to your investing when done right or it can set you back big time if done wrong.

This is a huge boost to my ego, and my wallet.5) Care and attentiveness.  

If individually, I would only make an offer on one and negotiate from there - with 4 involved, you'll have a better chance of 1 of them being more motivated and he/she will influence the other 3.  

That will influence what type of house you want to buy and how much you are willing to spend.  

The Stapleton influence in the area is under-rated at this point, IMO, because it's seen as sort of a "bedroom community".

If you are rather new, it may influence others to some degree that you are successful enough to swing a new car, you're not a total dead beat (LOL), I see through such things, but others may look to your stature and it may help in obtaining business, a more favorable impression.