The key to painting is.... tools and prep work AND good paint.
Good paint cannot be stressed enough! If you're working with a roller and brush, then having good paint makes such a difference in completion time it's hard to believe. Painting with cheap paint is like trying to roll on food coloring... it's messy and very hard to get right.
A good roller is important. You'll want a 4' extension for walls and ceilings. You'll want a 3.5" or 4" cut-brush.
As has been noted - don't use tape. Tape takes a really long time to lay out and costs a ton of money. Learn to cut with your cut-brush instead.
Also, using the standard sized roller is like trying to paint the world with a tooth pick. Consider buying a large roller - it will make the job go a LOT faster and you'll wonder why you ever messed around with a small roller.
A pro painter will use stilts to cut a ceiling/crown trim. I don't want to buy stilts because I don't paint or run enough mud or trim, so I use two 6' step ladders with a 10x2 run between them. Yes, it takes a bit longer to set this up... but it BEATS THE STINK out of having to cut in 3'... move ladder... cut 3' feet... move ladder. This will cut your paint time down so much you'll be amazed.
Get a paint cup for your trim brush. I like the purdy one from Home Depot... put in a liner, pour in your paint, and go to town.
Another thing that will help cut down your time is to put your brushes in the refrigerator if you want to take a break. It will keep the brushes wet up to a day ro two... might ruin the brush though. Rollers go in a ziplock bag and then go in the fridge as well. That way you don't have to clean brushes between coats so much.
To more directly answer your question... you sound like the trim is already done (except for some crown maybe), so you're really just cutting and painting field.
A 10x12 room with that kind of set up - you should be able to lay down a full coat of paint in about an hour, maybe two at the max.