okay, so i have some questions i really need answered.

im growing in a computer tower with a 40W daylight fluorescent bulb, ill be getting a 40W full spectrum fluorescent soon too but anyways..i need to keep these plants as SMALL as possible. so a couple questions..

1.) how long will it take (estimated) from beginning to end for my plants to grow and harvest, i know it depends on strain and lighting and whatnot, but i just need an ESTIMATE..like between 10 weeks and 20 weeks? idk, let me know!!!

2.) i need to keep my plants small and get them to bud so how should i go about doing that? im not looking for the absolute best weed, i just wana grow, bud, harvest, and smoke my own shit lol.

3.) how long should i let it grow in vegetative state before i induce flowering, keep in mind i need to keep them SMALL. like..no bigger than 2ft. - 2.5ft.

honestly, any and all help would be GREATLY appreciated!
Thanks!