I run 2mm limiters in the front and back, then unscrew the rear shock ends a 1mm to get the right droop.
No limiters = broken diff outdrive**.
Front sway bars - for indoors, yes. Outdoors, I have not run a front sway bar in a long time - I found it made my buggy too twitchy. But I like the idea of more grip, so I may go back to it next year (our outdoor season is almost over)
**See Bentka's explanation below for further detail.