Consider this:
Battle Chest: $11+
Legion: $45+
Total: $56
For $60 you could buy 3 WoW tokens. Each sells for about 35k gold on my server right now. That's about 105k total--risk free--for a LOT less headache, hassle and risk.
HB3 is brand new. There's so little content out for it right now. Half the Buddy Store categories are entirely blank, i.e. you can't even give your money to someone for the functionality. What's there is untested and frequently clunky--with sub 4-star ratings and comments about how stuff doesn't work at all.
Trying to earn 105k worth of gold is going to be very difficult in the short term. You're going to spend WAY more time, and IMO there's a great chance you'll get caught. We're due for a ban wave any day now considering the last 3 were May 2015, Dec. 2015 and April 2016.
I disagree with most of this post. Granted, the part about buying WoW tokens being less of a hassle is true, if you don't want to bother with botting and don't mind buying gold at a premium. However, the rest is misleading or just incorrect.
HB3 is an update to HB2, that in theory should work with most of the content from HB2. In practice, this isn't true a lot of the time, especially with old, abandoned content. However, for purposes of making gold on a suicide account that should matter little, because the gold making opportunities in Legion content are vastly superior to anything in Legacy.
At current prices, each herb node is worth over 100g. Any type of gathering right now will make tens of thousands of gold for an evening's farming. I've made 500k on my bot account and I've barely been farming. Sure, it takes a small amount of effort to sell them, but with addons like TSM, after some initial setup, posting 500 auctions just takes a couple clicks.
As for the risk, sure, there's always some. However, just looking at the dates and saying that we're due for a banwave is ignoring key pieces of data. If you look at the patch history and compare, banwaves always happen during a lull in content. May 2015 was towards the end of 6.1, with over a month until 6.2 was due. Dec 2015 and April 2016 were well into 6.2. What data we have shows that Blizzard will launch a banwave when they have nothing better to do, not when they're occupied by a million other things right after expansion release. Assuming that they find a way to detect HB again.