Something from the tech level of common Sci-Fi series like andromeda, stargate, star trek... are those too far in the future?

I kinda liked the settings of the Ancients from Stargate, however they are far too advanced. But what about for example the Replicator technology? Cloaking like the Romulans? How far is considered advanced for this RP but not too advanced. How fast is considered average in FTL in this RP? 

Those are currently my main questions.

I don't want to annoy you, however this would be my first RP on this site. I want to get more information to fine tune my concept.