for 5s, just go for it on a remarkable bigger kicker than on your first threes, i did em first on something like 30, if you have the balls, you wont have any problems to get em around, just look where you go, at least since 270 you will see the landing and than you just have to bring another 270 down while you will be able to see pretty everything that is important,
than you need to be pretty comfortable when riding and landing switch