Measure your lanai, get the dimensions (length, width, height that you want the pavers to go up to).
Pick a style of paver, divide the paver dimensions into the lanai dimensions, to see if they will come out close to a full number of pavers in both width and length.
Pick an alternate paver style or two, do the math.
Then pick the one that you think is the least amount of work to make fit.
You will probably be cutting some of them to get a near perfect fit, so get a wet saw (buy / rent),
now figure the height to see how much sand you will need to raise them to the desired level.
This gives you the height that you will need to raise the edging pavers, in the egress points. you cut risers from either , regular brick, or some extra pavers that you buy to make into the risers. You might be able to use cut tiles if the raised is just a little. Use the saw to cut these risers, Adhere the risers with PL adhesive, in the exact line that you have chosen to get the field without having to cut many pavers to fit, then adhere the egress pavers to the risers on top, remember to allow space for the adhesive in the cuts to bring the egress edging to the desired height.
After the adhesives cure, start in the corner next to the home, laying the pavers in your chosen pattern, working across and back toward the outside corner.
remember to screed the sand out to the figured depth, tread lightly , do not leave any footprints or divots in the sand, can be done, but ain't easy.
When you get close to the outside you probably will need to cut some pavers to fit close (not TIGHT) because you need a very little room for the polymeric sand.
Check that all field pavers are level with it's neighbors, if not use a rubber hammer to gently persuade it to settle in, or pull it up to add a little sand underneath.
Spread this polymeric out and sweep back and forth both ways to get it to fall into the tiny spaces between the pavers.
Then clean up any extra polymeric.
and sprinkle water slightly over the surface to set the pavers.
Let dry and marvel at your creation.
You will have a step down at the egress points to the outside, so plan to do something about this trip hazard.