200 points is way too much to spend on a prince on a 1000 pt list, thats 1/5 your army for a single model.
BoC isn't even necessary on such a model, they're expert tank killers as it is, as well as very dangerous to infantry.
3 Obliterators is beautiful at this points cost.
Berzerkers should always be in a vehicle, as well as having a champ with power weapon, otherwise they just go to waste in either situation. Drop the plasma pistol too, Your going to get to use it once, whereas if you put that towards a power weapon you can really take advantage of zerker's specialty (close combat). What are the personal icons for?
Plague marines always, always, should have powerfists, as well as 2 special weapons. In the end I'd consider dropping one of your troop choices and beefing up the other 2 squads as well as making sure they both have rhinos.
Such as like -
DP Wings,
MoT,
WT 175
10 Plague Marines, 2x Melta,
AC,
PF, Rhino 325
10 Berzerkers,
AC,
PW, Rhino 275
3 Obliterators 225
Just be sure to lead with the plague marine rhino so as to give the other cover, the last thing you want is your zerkers getting stranded. If plague marines do they still have good mid-range capabilities, and are tough enough to footslog the rest of the way. Use them to tie up units while the zerkers furious charge even if it means the plague marines get charged themselves (this is the best use of blight grenades). You might even consider giving the
DP MoN, and having him fly directly behind one rhinos (back one) for the 4+ the whole way there. Keep your obliterators close providing cover fire and always move them forward. Consider putting them each as their own unit if kill points is not an issue for you.
Good luck mate