i don't know about "expert" but i would probably say proceed with caution. tank size. fuge size, and other setup ticks all the right boxes. my only real question is compatibility with the current stock list. nothing sticks out as a red flag to me, but i'm not familiar with any of those fish first hand (except the clowns, obviously they're fine), so i can't say for sure.
i would think you should be OK. just as a "safety valve" i would just read up and consider some supplemental feeding options such as pod condos, mandarin diners, or PaulB's feeding station:
http://reefcentral.com/forums/showthread.php?t=2113800&highlight=feeding+station
all very handy techniques to keep in your back pocket. they can also be useful for helping to fatten up a new arrival dragonet.
in regards to compatibility, i am not sure what chart you're referencing specifically, but the LA one says caution with basslets and blennies (look under dragonets):
http://www.liveaquaria.com/general/compatibility_chart.cfm
i'm not sure about why they're listed as caution with those two. i've kept my mandy with my lawnmower blenny (Salarias fasciatus) for several years with no issues, but they occupy completely different ecological niches, and my lawnmower tends to be pretty easy going anyways.
if i had to hazard a guess about the basslets, it is probably because most of their species (again this all just according to LA, not first hand experience) are listed as semi-aggressive, and eat the same food as the mandy. typically problems arise when you have several fish competing for the same food source.
