I was gonna say pretty much the same as @MysticalDork , I don’t think there’s a big downside to running a VESC in DC brushed mode. There miiight technically be a limitation with concentrating the heat on 2 phases worth of MOSFETs instead of using 3 phases but I really think it’s negligible, especially given the lower power motors. Plus was gonna also say this:
I’m personally in favour of lipos for value for money at the moment, they don’t seem to be as hard hit by the shortages as cylindrical cells. I’m running a 10S2P 18650 pack at the moment because I got a really good deal, but I’ve ordered some lipos to replace it.
+1 on this as well, if you can find a makerx in stock. If not, there’s apparently some info or guidelines around on using FS ESCs safely (basically ignoring their stated current ratings and going lower) but like you said, if you’re saving on motors it would be nicer to get a BKB Xenith or makerx or something and only have to buy once to be set for quite a while.
Haven’t used a puck but if you’re looking for cheap and still safe reliable options there’s the Flipsky VX1 and the generic RC Mini Remote, covered here How to bind the Mini Remote [Serious]