Thanks for those tips.
Ok here is what happened.....
Regarding the earlier idea of selling the worlds to build my ships.... did not work, AI wont give hardly any money for the planets, game over.
Started a new game over the weekend... terrans, gigantic map, tech trading and brokering off... Drengin on Genius level, Alterians on Gifted, everyone else on normal level. Ok so the game went fairly well, however not because of my own good strategy. The Drengin happened to be over the other side of the galaxy with other AI races inbetween. if they were closer, i could not have survived, that's a fact. It just takes to long to drag my planets kicking and screaming towards productivity.... that's the big problem.
Anyway, i managed to achieve some good productivity FINALLY, but its way too much!! Its like i am starved starved starved all the first period of the game, then suddenly in a short period i am flooded with productivity and realize the game is pointless because i am now way overpowered for it to be a challenge.
So with tech trading off i am going to be ridiculously under powered and if i survive that i quickly move on to be ridiculously overpowered, what a shit, honestly, what a shit.
This is all about having tech trading off..... whenever i have it on, i can do supremely better because i can get something called 'credits' and use it to rush by stuff that wants to take billions of years to build naturally. I can rush by on my specialized worlds - manufacturing and science. Especially manufacturing, i can get my manufacturing capital building military vessels in reasonable time period much earlier on on the game with tech trading on.... oh also when tech trading is on, i usually end up obtaining allot of military vessels from AI that are too poor to afford my techs, that boosts my power rating to deter attack to much later in the game. Whereas with tech trading off i seem to get attacked much earlier in the game.
Anyway, this looks like the first tech trading off game that i have ever survived to this point, so i will continue on just to see how the rest plays out.
You know what would be a great feature in this game? 'Timeline difficulty levels'.... the first part of the game, the difficulty is low, then by mid game it automatically increases the difficulty level, then again towards the end of the game.... damb, that would be fun! Knowing you have a challenge to work towards even after you have achieved a superior position in the game.