That CB-E is great in that it does not need adjusting, I guess it was C in it for intellicarb feature.
http://m.stihlusa.com/products/chain-saws/homeowner-saws/ms181cbe/
That 181 is great for new user as it has not too much power, but still enough to do the cutting and if one is patient enough, could do some felling too. If that is anything similar to power of my old 236 Husky that is of course and on paper power ratings are roughly the same.
If you sink all that 14" bar into wood it will not have power to do any kind of fast cutting, but if chain is lightened by holding saw bit so it is not full weight of saw into wood, then it does grind trough the wood.
When limbing such power is great as there is no strong kicback, at least Husky did not have any kickback compared my 3hp Jonsered which I need to be careful when limbing, it likes to bounce quite easily.
Chain maintenance is very important with these low power saws and I guess best for beginner is Stihl 2-in-1 filing guide, I believe Pferd made the original, so you might to read from that and maybe get it with a saw.
Learning free hand filing is of course fun, but learning to produce art is going to take a while, so I would get some kind of filing guide at the beginning, Oregon, Husky, Stihl all make usable ones with lot of different prices, so if 2-in-1 is bit too much in cost, there are cheaper alternatives that work different way.
With Oregon filing guide I learned how to make a stroke with consistent angle, now that I have learned how to use Husky roller guide, I think I can make sharpest chain, with free hand I still file too much into chain links and too little on cutter, but 2-in-1 guide I have only read about, but what I have read is all good for beginner user.
File chain every time you fill gas tank, just a little, so chain stays better, cutting performance is greatly reduced with low power saws and dull chain.
Also low power is not a bad thing, I think that those few years that I had low power Husky 236 taught me a lot about how to handle and maintain a saw so that when I moved to more powerful saw and found out about kickback, I could manage it and not getting injured.
With small power saw, fuel costs are also smaller, it might feel like small thing, but it all adds up, also small fuel tank is making sure one takes breaks enough often. My Husky had 50% smaller gas tank than my Jonsered, but only around 33% shorter usage time.
Then there is noise aspect, sure good brand helmet has great earmuffs, but still some noise comes trough and while it does not feel a lot, when working longer with the saw noise tires me, not sure if it happens to anyone else, but for me less noise is definitely better.
So, that 181 looks like to be good choice from my opinion.
For low cost helmet and chaps, I don't know, price looks suspiciously low to me, I have Husky helmet that is meant for occasional use, I think it did cost around 40 and it could be a lot better, ear muffs cause some pain after few hours, maybe because of my eyeglasses, also my jacket's collar rubs sometimes to visor and that causes loud noise to earmuffs, helmet has cheap plastic feel to it. Sure it works, but I might look something better.
Also I have little issues with pulling my ponytail over adjustment thing which I need to do or plastic strap with adjustment is pushing pony tail holder strap thing.
So you might like to test fit helmet in person before buying.
I don't have chaps, but what I have found out is that most here are sold for class I protection, that is 20 meters per second chain speed for max and it is not enough for my saw, I don't know what is chain speed of MS181, might be enough, but all chaps are not equal, that I have learned.
I'm still trying to find class II or class III chaps or pants that does not cost arm and leg, but I have done fine without, however I have protective logger rubber boots that have protected toes, bottom and front part of boot that goes up to near my knee. Heavy for sure, but also great, I have cut few times to my toe area and area that is between my ankle and toe, but boots have saved from any damage to my foot, haven't even noticed I cut to my boots, such gently taps while pruning, but if I would of not had those boots I would of bled.
In US you have different safety classification, so I can't help much with that, but I guess lowest cost ones are lowest in protection, some research of chaps and boots might be needed, if one could get better for 20 dollars, it might not be worth to get those lowest protection versions, but I'm sure someone else has better advice on that as I know only some about european classifications.
