peppy is interchangeable with most cards but i find the refresh is very helpful cozy would also be a option but it has mediocre effects in actual play so i find that peppy is better but if you see no use ill put interchangeable cards below

wobbles allows you to rush in without getting punished but usually you want to fall back with it over push in.

boop is good as you can use it to rush down your marks and maneuver around or fall back overall faster.

lastly morning breath is only viable if you really rush down marks or just really need a form of mobility.

you can run kill to heal life rip as it makes your sustain allow you to 1 v 2 at a semi comfortable basis.

chronos overall is very good for moji and most characters at that and nimble is just mobility and as moji it can help with positioning ult and allow you to extend slightly more without punishment

but i would recommend kill to heal life rip and or kill to heal first almost always

Kill to heal is great on max out as previously stated kill to heal is your main sustain.

and nimble is only if you feel that you need movement which if your using scamper correctly you shouldnt as much but still very nice to have

chronos is for if you didnt buy first which is what i would recommend.

morale boost is top tier as you can use your ult to bypass all healing or sustain and kill the tank or healer.

and haven is overall very nice to have as it will keep you alive longer which if you want damage you have to be alive to get.