Well, none of us have access to your map, so we can't tell you where to put your quarry. Personally, I run an Ender Quarry instead of a BC one so I don't leave gigantic holes in my map. I also have it about 9000 blocks away from my base, just because I can. Do you have the Silk Touch upgrade on your quarry, assuming it's an Ender one? If not, go for that next.
My server's been up for almost 2 months now, and I'm running into "stopping" points every couple of weeks where I feel like I've gone as far as I want to and don't know where to go next. I did nothing but tech until this week because I just didn't understand the magic side of the game. This week, I decided to go that route. Right now my base has 4 large areas: 1 each for Botania, Thaumcraft, Witchery, and Blood Magic. Since the Expert mode ties them all to each other, you have no choice but to level them alongside the rest. After 2 days of grinding things that are well-below my tech-level, I'm finally starting to get gear and baubles that, while they won't replace my tech gear, will augment it to make me even more effective.
Luckily I'm doing this on a multiplayer server...when I get stuck, I just visit other player's bases and see what they're doing. If I'm stuck in Botania, I know which base to visit to get an idea of where to go next. If I'm stuck in Draconic Evolution, I can go to spawn and visit our powerplant. I tried regular Infinity in a single player world, and it wasn't as rewarding because it was just me on the server. When I got stuck, there was no one to push me on.