I have used your build ideas, I have all AP heavy cannons on the front of galbocks BoP. Having a hard time finding consoles for them, was told need to use mark viii since the mark x were ultra rare and bind o bickup. The mark viii are expensive as hell, the lowest I found was 900k, average was 1.5m.
Been using generic energy weapon consoles. This build is pretty nasty, NPC ships don't last long at all, especially with cannon rapid fire active. Can't wait to try in pvp.
If you can, try the Friday night pvp (unfortunately that's evening Euro timezone) which is largely well represented and a HUGE amount of fun and is a lot more fair and balanced and well natured. It's a good place to start practicing. I don't know if there is as much interest in the US timezones for pvp within the fleet.