Some randomly-organized notes/advice:
- That bomber starship gives you an edge on the AI home planets, specifically against their force field, fortress, and actual core command station. You can really use that to your advantage.
- Your AI Progress really is not all that high. I tend to me more like 500 when I go for the first AI home planet, but I tend to ride a little high on that. If you are concerned, you can always cap some more data centers if any are around (that's easy to raid with starships), and then the extra AIP from your other planets is no big thing.
- I actually really disagree with RCIX about bum rushing the home planet command station, that's likely to get you killed and to give them way too much chance to reinforce. I tend to take it in waves against the home planet, and hit one or two of the guard posts per wave (assuming that I die with each wave). Play styles vary, but if you attack the home command station then the ship cap on that home planet stays at max, and the ships from all those guard posts will attack your fleet simultaneously. With the bomber starship you do have an edge that might make that possible to do, but I still wouldn't recommend it; the other problem being that as soon as you kill the command station, those guys are going to go kill your command station if they can, so killing them first is helpful.
- I don't think RCIX had any particular reason for suggesting one home planet over the other, I certainly don't have any reason for suggesting that.
- I'd definitely consider taking those other two ARSes and getting the knowledge from their planets, too. Having mark III/IV frigates at the very least might be helpful.
- Those other fabs aren't all that exciting for this point in the game, but I guess the translocators could be interesting when attacking the home planet (can't remember if that affects core stuff or not).
- The Mark II reactors are great, they are the preferred things to build (as you say), as long as you don't have multiple of them on a single planet. Not sure where superking's comment was coming from, maybe wrong thread?
- What are your other fleet ships? I didn't see any mention of your special unlocked classes. Depending on what those are, some of them might be preferred for unlock instead of the frigates. And whatever you get from the other two ARSes might prove to be awesome or might prove to be not that great, but they will give you the knowledge from the planet at least, and also some extra mark I chaff to suck up enemy fire. That can help increase the survivability of your higher stuff.
- You ought to be able to reach Rochmund from Rinhalu with transports. Same with Deyso, actually. They look equidistant to me, and so if you have enough transports it should be no worries.
- When it comes to the orbital mass drivers, that's something to treat just like an ion cannon: attack it first with stuff that it can't kill (like all your ships other than starships), then bring in the ships it could kill. Simply sending in a transport next to it with bombers, fighters, and frigates should let it get finished off pretty quickly, and then you've got a free hand for your bomber starships and such.
Hope that helps -- good luck!