Replying to Surface swap/butter variation help.

i already posted this in the trick tip forum, but i thought i should post it in here as well.

So today i was gettin creative and messin around on a DF box and started doing a bunch of surface swap butter variations.
(not sure, if the terminology is correct, please correct me if not)

surface swap 3s
surface swap 2 to 180 out
surface swap 4

Now, here are a couple variations that i have tried and failed, or just thinking about. maybe you could help me out?

FS surface swap 3 to switch out.
for this one i had a hard time just stopping my rotation after 3. im almost positive im having trouble with it because i never could really tell where exactly i am in order to change my rotation. any help? i wanna start pretzeling this, and switch out would be a good foundation.

FS surface swap shifty 4
i was thinking i could put a shifty in just after i rotate the 3 and land forward. any tips for putting the shifty in?

FS Surface swap 3, FS 2 out.
i tried this one, but when i started scissoring for the 2, i'd end up doing kinda a 1 foot 50 50 kinda thing. would it be wise to stop the original rotation to setup for the 2 out?

FS surface swap 5
just for shits, i wanna try a butter surface swap 5. any tips on just spinning like crazy? i know i should spin harder, and keep looking around my shoulder, anything else?

any help would be much appreciated.