Couple of things, first regards the shape circled in red. Dont worry about that it is just the way Mach Turn displays the part, it looks at all feed moves and thinks they are within the part. Normally Cam would have rapids close to the end of the stock (to your designated start point) but looks like yours may be using G1's.
Ok the second thing, yes your spindle does seem a bit slow.
Third, I suggest you programme in feed per rev (G95) rather than feed per minute (G94) It is the normal way to do things on a lathe and it means you will always be feeding at a suitable rate even if you call a slower/faster spindle speed. Normally on my big lathe I will rough at 0.3 to 0.35mm/rev and finish at 0.15 to 0.2mm/rev (depends on nose rad of the tool) My lathe is quite solid and has a hydraulic chuck so the roughing is no problem. On the wee lathe I would likely be roughing at 0.2 to 0.25mm/rev.
Hood