[dogscoff]

Something no-one has mentioned in this thread so far...

while sending in cloaked ships are a great idea, you'll have to watch out for mines. Even cloaked you will still be vulnerable. I'd recommend capturing a few enemy ships using intel and using them as minesweepers before sneding any cloaked ships into his territory.

Then slip a few planetary assault ships (plague/ troops/ napalm/ your choice) past his frontline to wreak havoc in his core systems. Being a newb he'll probably panic and divert ships from his WP defence to to counter the threat, then you can hit the warp point with a stack of AS frigates. Have a defence fleet and/or unit launchers waiting to secure the newly-exposed system(s).

Also, when the AS fleet captures loads of big ships, you'll have to be careful that their maintenence doesn't cripple you. Have a spaceyard ship handy to scrap any that you can't afford to keep. Make use of the resource theft intel project if you have it, too, that will help.