a burr grinder is great! that's what you want. blade grinder chop the coffee instead of pulverizing, so you have a worse distribution of particulate leading to uneven extraction. Kenyas are usually high acidity and won't work well with half and half, but the Sumatra should fit your profile more. The processing method used in that coffee is known as wet hulling, which produces a different funk/fermentation profile that leans earthy with a bunch of bell pepper. It handles cream well, though. If you're in NY there are some great local roasters. Also, whole beans can get frozen ONCE. The cellulose structure will reabsorb water and ruin the bean if you transfer back and forth between room temp and frozen. There's a shop in Portland that keeps their grinder and coffee in custom freezer units that they then grind to order, it's pretty interesting. Other than that, store in a [preferably] mylar bag with a one way valve. While some years back we used to advocate for very fresh coffee, it's become commonplace to let coffee rest for a week or two (light roasts and espresso blends/single origins) to let the coffee off-gas properly.I wouldn't even know what questions to ask.
The one thing I do know is, I don't love coffee with a lot of acidity.
I typically do add some half & half with my coffee. But not always. I'm actually trying to drink it black (with maybe a half spoon of sugar or splenda) more often.
Also, I have a burr grinder and I feel like the taste is way, way better from grinding whole beans than when I buy the bag of ground coffee.
I only got the burr grinder because I had points with my job and it was one of the few things I could buy off the promotional store that wasn't crap. It's a Bodum model something.