We were lucky in that our first rig, another Hurricane 30', had them installed when it was originally purchased. So we learned how much difference they made, even in a smaller lighter coach. On a coach, hydraulic is about the only choice, as you probably do not have anywhere for post-type jacks to retract into.
I was thinking about something like a porta-power we used to use in the shop, but after looking at what is available and the prices, HWH might have a better solution. You could save a bit by going with one of the manual systems instead of an auto-level one.