I started out with a four light LED quote.
Eventually this became a 10 light minimum.
Now, I recommend 20 +/- 3 fixtures in order to light an entire room.
I will usually give an onsite consultation whenever they go above 10 fixtures. Since I like to see some kind of commitment, the 10 fixture quote is usually booked first. Some rooms require more LEDs and others require less. Really it is just about keeping the room well balanced and within their budget. You want to put the fixtures in places that make sense and give the best results.
For uplighting, you can either use PARs, strips, or pallets. Each has their pro and con. I've started with the PAR, and moved to the pallets, and looking to reinvest in the strips. Here is my reasoning behind this:
PARs are great, however the weidamark ones I purchased did not make it easy to daisy chain the power (I didn't have custom cords made yet). I also did not like how the base plates had to be screwed on/kept on each time I used them. Without the baseplate, the fixture would not balance properly. I didn't like how they were bulky and hard to transport. I didn't like how the beam angle was focused.
I then purchased the Chauvet Techno Strobes and fell in love with them. The beam angle was more, so a wash effect is accomplished easily. In low traffic areas, they don't require base plates (reduces setup time). The chauvet techno strobes make it easy to daisy chain the power. The units are compact, so you can stack 12 on top of eachother in an Arriba Mackie SRM450 Rolling bag. The main problem I am noticing is how quickly/easily they get damaged. They are more bulky so guests tend to bump/step on them more frequently. Also, I've had some issues with burnt out LEDs.
Because of everything above, I am in the process of moving to the LED strips, for a cleaner more focused wash. Another important thing is to make sure you get several powerful LEDs fixtures for outdoor applications (ex: tents). It can be a hassle to setup 20 fixtures in a tent with mega clamps (even hiding cables is a PITA). If you were to use 4-6 higher power LED fixtures instead, you will greatly reduce the tent setup time. I've had to learn this the hard way.