Get ready for an education and $$$....
Basically, lasers are "moved" similar to plasma cutters, so think plasma table (which ever size you want, mine has 2'x4' cutting area).
Next, consider what you are going to cut. Read "thicker = more power" (to some extent). Wood cuts easy, metal doesn't!
My laser is a flowing gas laser (ex-surgical laser) vs sealed laser.
Too many questions to give more answers.