The endlis should only take a few months with the ornate right behind maybe 6 months, then the delhezi will take longer, maybe around a year of GOOD feeding. Mine grew from 4 to 5 inches over a month.
My red wolf has been with a del and sen since its first day, and an added smaller del recently. Mine doesn't bother anyone unless they bother him (aka going into his cave). I can only vouch for mine, though.