first grow have some questions

this is my first grow, its in a cupboard 2 feet tall 1 foot wide and 1 foot deep. i got the seeds out of my last batch i bought so i don't know how tall they will get so i'm planning to flower 3-4 weeks after starting veg unless they grow faster then i expect then ill flower sooner. i'm kind of strapped on money right now and i'm not trying to do anything professional just want to make it to harvest

question 1: in such a small space im only using 2 lights will this be enough?
question 2: iv'e read that you can use 2700k light bulbs for flower and veg is this true?
question 3: does tinfoil work for reflecting well? ive read that it doesnt


any advise would help because there is alot of controversy on the internet i just need to know if this will work and im a first time grower so dont be to harsh

look up PC grows. thats what you will probably want to do its about the same size. no tin foil doesnt work well for reflecting, you can find mylar pretty cheap i believe at dollar stores and stuff. also the light bulbs are only a few dollars a peice but you will probably want atleast 4 of them plugged into a surge protector inside your small box. also you could get a couple of computer fans to put in the box cause you will need some air flow in there. if not your plant will probably just overheat and die.

also you will probably not want to veg for 3-4 weeks in that case. you could just look up low stress training and train it along the whole bottom of your box then when it has covered the bottom flip the lights to 12/12.

1 : Depends what lights you're using : if you're using HID it's perfect. Now depends how many plants you're thinking to grow and what you expect in terms of harvest.
2 : Starting from 400KV you could use as well the MD/HPS for flowering and veg stage. Best results with MD for veg and HPS
3 : Flat white works the best in terms of reflection so I suggest you try that.
Cheers!