I have the basics in each side already (bed, sheets, couch, table, light wall decor, along with all appliances).How much more should I add?

You normally charge rent for the real beds in the real bedrooms, and there is an extra bed or two in every house that you don't charge for if the real beds are all paying money. 

The purchase price was 98K for a 4 bed 3 bath sfh.

Your highest comp went for $205k when filtering at or below the subject property's beds, baths ,sq footage, year built and within a mile of the subject property. make sure you're not exceeding these figures while running your comps or you may not be an investor for long. the listing doesn't have interior photos which usually means there's a lot of rehab needing to be done.

I found a duplex (2 bed| 1.5bath| 1 car garage) in my area that I’d like to purchase.

Either be ants, cockroaches, bed bugs, fleas, etc., and the first 2 weeks of move in the land lord will take care of these problems but after that they tenant is responsible. 

Investment Info:

Single-family residence buy & hold investment in Sneads Ferry.

Purchase price: $117,500

Cash invested: $20,000

Bought a VA Foreclosure in the Sneads Ferry area and doing a live i...

There are plenty of kids who don’t want to pay $700 per bed to live on the other side of that bridge.

I’m getting top dollar out here in norristown 1050 for a one bed

From what I have researched, I can get a 3 bed 3 bath house for around $230k in the area that is relatively new (>2000), with FHA it'll be around $1650 a month with home insurance and property tax.