a really really easy way to get Latinum, or atleast enough for dyson sphere plans ;D, is to do the maxlat cheat after pressing F8 but then do the maxdur cheat and sell all of your deuranium at the planet, and then do the max dur cheat again and sell it all. after about ten times you get enough latinum to buy the dyson sphere ;D ;D . oh just DO NOT then press maxlat as this will not add it it will take down however much money you had too it, so if you have more than 999,999,999 or however much the cheat gives you it will just take you back to it.
I don't know much about that game but I know how to get that Reman Warbird. First you should buy a fast ship. Than warp to the remus system and fly SW at full speed. You need to fly fast because the Romulan starbases will use their cloaking device. If this didn't work, you can also wait till the system is attacked by the dominion. The base will decloak to protect the system and itself. That will give you the time to find the base.