Regarding the original question about the wheels. I've used the Wheel Master from bikeworldusa, Husky wheels and Worksman.
Of the three I would pick an older Worksman in good condition even over a new one, the reason being that the chrome on the old ones was good quality. The recent Worksman wheels I've worked with are well made, but the chrome is poor for what you are paying. I think the chrome on the Husky is better quality, but the spokes are 12 gauge rather than 11 with the Worksman, still plenty strong for a motored bike.
The wheel master is a bargain for the money. The chrome quality is so so to poor and eventually they are going to rust unless you live somewhere dry like California or Arizona.
I've had the Histop coaster hub apart and they are pretty cheaply made, but only had one actually implode. What would you expect; the price is low? Still, they are much better than a thin spoked wallyworld bike. Especially if you expect to be riding at speed you need a stout wheel.
The absolute best bargain in my opinion requires teaching yourself how to re-lace a wheel, which is not all that hard. There are some very helpful videos on U tube leading you through the process.
Here's how I get a good coaster brake wheel on the cheap. I buy a new wheel master from bikeworldusa, take it apart and paint the rim (best would be to send it off for powder coating). Dump the Histop hub. The bearings are small and internal parts are not of real good quality. Find an older wheel with a Bendix hub. When you open one up you can see great machining, quality metal and big ball bearings. You'll need to drill out the spoke holes in the hub to accept the larger 12 gauge spokes, but this only takes a few minutes. Lace it up and you have a stout wheel that looks great and has good stopping power with a hub you can trust.
A little more trouble, but you can also use original balloon tire wheels from a 50's or earlier cruiser, drill out the spoke holes to accept 12 gauge nipples, lace in 12 gauge spokes (I buy the front wheel master and then lace it 4 cross for either a rear coaster brake hub or a front wheel hub with drum brake. It is as cheap to buy the whole wheel master wheel as it is to locate and purchase the spokes alone. My experience anyway.
So, best bargain is wheel master front wheel... powder coat rim... lace four cross to take up the extra length of the spokes (10 5/8" if I remember right) to a 70mm Husky or salvaged moped front drum brake or a Bendix rear coaster brake. You end up with a stout wheel, no rusting chrome, and good quality hubs at a bargain basement price. More effort is involved, but your end result is right up there in custom quality.
I'm no expert with this stuff and laced my first of many wheels this past spring. Now I'd rather build my own wheel than buy a ready made one, especially since I can build two or three for what a new Husky would cost me (that is if I use old moped hubs or Bendix coaster brake hubs).
SB