Hi!
And for that map, 4 planets was a lot. the biggest AI had 5.
How do you guys get 1000 research alone? 100% production spending?
With 700% research bonus tile and playing all-labs, 1000 flasks should be doable, if you can manage that financially. With so few habitable planets Trade Ships should be your main money-maker, covering that big money sink.
I base my race around a full research strategy. Max out my bonus, technologist, etc.
With all-labs you lack production output and money, not research. Better spend bonuses for that. In DA econ bonuses are almost mandatory: if you have money, you can BUY a ship. If you don't have money (what's the usual atate of affairs

) , you need production bonuses to build faster.
I"m attacked by the drath legion, who has nearly the same in all non-combat techs, and vastly out-tech me militarily
Tech brokering. Like others already said, AIs in DA do that very often.
So be better at that than they are: when you get an appropriate tech, you sell it to EVERY civ in the universe. Also when you buy one such tech, you do the same. Having good diplomatic ability for that is a must hovewer, so never sell diplo techs, and weapons and defense techs you intend to use.
BR, Iztok