I also agree that the script is the key element. If you have a good story to tell, you should be able to make it work. In TOS there was constant tension between GR and NBC. NBC wanted more (budget busting) planet shows, while GR was trying to hold down costs by making "bottle shows" that used minimal (if any) original sets. The fact is that some of the best episodes were bottle shows (Balance of Terror). There was also "Gem" which used almost no sets of any kind (it's a polarizing episode, but not because of its lack of elaborate sets). Then there was "Specter of the Gun" which used partial sets because there wasn't enough money to finish them, but that actually turned into a critical plot point. Odds are that if you concentrate on making your script about people (interesting people hopefully) instead of sets and gadgets you'll find a way to make it work with what you have. Personally, I would say that if you've got a finished bridge, you've got a huge start.