Equipment kits are perfectly fine. The biggest 'problem' people have is they get a good decent starter kit, fall in love with the hobby and end up buying better versions of some of the equipment that came in the kit, or new pieces of equipment, or making new equipment, and more fermenters, and .......
Equipment kits can vary from place to place and they all have advantages/disadvantages depending on who you ask. Key things you need to look for are:
-fermenter (could be a bucket or a better bottle or a glass carboy)
-lid for the fermenter or a rubber stopper for the bb or carboy
-bottling bucket
-hydrometer
-bottle capper
-bottling wand
-air lock
I'm probably forgetting a thing or two. As a GENERAL rule of thumb, don't get the cheapest and don't get the most expensive.
You will also need a thermometer that can read from @60-@160F. I have 1 that goes from 30-150 and another that's 100-450 and I use 1 for the high temperatures and the other for the lower ones but as long as you have the 60-160 range covered you'll be fine.
As far as what style goes, get what sounds good to you, but the advantage of Porters/Stouts is they don't use much hops, so the recipe tends to be simple and are darker, so you aren't worried about hazy beer or sediment you might be able to see. Plus, this time of year, people tend to brew darker beers for the colder weather.
At the end of the day, there is no wrong answer about which beer as long as it isn't a style you know you don't like, which is why I assume you say no IPAs. Best of luck to you and keep asking questions around here.