Thanks for the replies everybody.
Doesn't look like there's a clear consensus or rule for this.
My initial feeling was frustration at what I thought seemed OP. But some of the replies here have changed my mind to allow it at X6.
Super Monk Jumping would be super cinematic.
[MENTION=277]jasper[/MENTION] makes a good point about both the ring and step of the wind requiring a bonus action. However the jump spell lasts a minute, so the effects could be combined on the next turn.