1st- wat should i put on the walls? Put a flat white or mylar
2nd- how many plants can i grow with a 1000watt light? as many as you want depending on what size, you have a 4' x 5' maybe 12-20 plants, in gallon bags, with pans
3rd- how far should the lamp be from the plants? i that small of a room, 24" at first, once you start the 12 hour cycle for budding 18"
4th- wats a good schedule to start a my clones on? 18 hrs, top them at 5-6 bracts up, then top clip the new growth and start the twelve hour cycle, small room;;;; lot of ventilation ad auto feed nutrients cause they are going to drink fast, and of course inject CO2

Good Luck,
mikee