Tell you what, Mamadirt on here is the one to talk to about tiny bikes. She’s had most designs!
Stuff for smaller people is difficult. As a small bloke (5’4 1/2″; 9st), I’ve often found a lot of stuff is too big, too heavy or just plain wrong. Not so bad these days, as more manufacturers acknowledge there are more sensibly proportioned people around…
Full suss is always an issue for those of more diminutive stature. Difficult to get all the suspension gubbins into such a small package. Personally, I don’t much like big 5-6″ travel forks etc, as I feel too high off the ground.
The Rush does not in any way look like a design that would work well in a very small size, as it needs a certain amount of space in the frame, for the shock. Maybe a design that has the forward shock mounting on the downtube would allow for a lower top-tube? The Orange looks like a preferable design to the Rush or SC Juliana, in that respect.
I suspect a happy solution will be a little more costly than if you were of more environmentally inefficient proportions.
Tinies Unite! I’m sick of stuff being too big and heavy, just because other people eat too much and grow unfeasibly long lims and torsos.
My frames use less metal, therefore, I am better for the planet. And other stuff.